<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019c8bcb-602a-71bd-b05d-1074e9894670,g:1f962453-af88-4f3b-9b67-30f077d81cef-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:fwrg="http://www.firstwatch.com/20260329" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.firstwatch.com/20260329">
  <xs:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fwrg-20260329_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fwrg-20260329_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fwrg-20260329_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fwrg-20260329_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Cover" roleURI="http://www.firstwatch.com/role/Cover">
        <link:definition>0000001 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETS" roleURI="http://www.firstwatch.com/role/CONSOLIDATEDBALANCESHEETS">
        <link:definition>9952151 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://www.firstwatch.com/role/CONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" roleURI="http://www.firstwatch.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS">
        <link:definition>9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFEQUITY" roleURI="http://www.firstwatch.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY">
        <link:definition>9952154 - Statement - CONSOLIDATED STATEMENTS OF EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://www.firstwatch.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>9952155 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NatureofBusinessandOrganization" roleURI="http://www.firstwatch.com/role/NatureofBusinessandOrganization">
        <link:definition>9952156 - Disclosure - Nature of Business and Organization</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPolicies" roleURI="http://www.firstwatch.com/role/SummaryofSignificantAccountingPolicies">
        <link:definition>9952157 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenues" roleURI="http://www.firstwatch.com/role/Revenues">
        <link:definition>9952158 - Disclosure - Revenues</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivable" roleURI="http://www.firstwatch.com/role/AccountsReceivable">
        <link:definition>9952159 - Disclosure - Accounts Receivable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilities" roleURI="http://www.firstwatch.com/role/AccruedLiabilities">
        <link:definition>9952160 - Disclosure - Accrued Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.firstwatch.com/role/Debt">
        <link:definition>9952161 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InterestRateSwaps" roleURI="http://www.firstwatch.com/role/InterestRateSwaps">
        <link:definition>9952162 - Disclosure - Interest Rate Swaps</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://www.firstwatch.com/role/Leases">
        <link:definition>9952163 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityandStockBasedCompensation" roleURI="http://www.firstwatch.com/role/EquityandStockBasedCompensation">
        <link:definition>9952164 - Disclosure - Equity and Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.firstwatch.com/role/IncomeTaxes">
        <link:definition>9952165 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.firstwatch.com/role/CommitmentsandContingencies">
        <link:definition>9952166 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.firstwatch.com/role/SegmentInformation">
        <link:definition>9952167 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossPerCommonShare" roleURI="http://www.firstwatch.com/role/NetLossPerCommonShare">
        <link:definition>9952168 - Disclosure - Net Loss Per Common Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.firstwatch.com/role/SummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>9955511 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuesTables" roleURI="http://www.firstwatch.com/role/RevenuesTables">
        <link:definition>9955512 - Disclosure - Revenues (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableTables" roleURI="http://www.firstwatch.com/role/AccountsReceivableTables">
        <link:definition>9955513 - Disclosure - Accounts Receivable (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilitiesTables" roleURI="http://www.firstwatch.com/role/AccruedLiabilitiesTables">
        <link:definition>9955514 - Disclosure - Accrued Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.firstwatch.com/role/DebtTables">
        <link:definition>9955515 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.firstwatch.com/role/LeasesTables">
        <link:definition>9955516 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityandStockBasedCompensationTables" roleURI="http://www.firstwatch.com/role/EquityandStockBasedCompensationTables">
        <link:definition>9955517 - Disclosure - Equity and Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.firstwatch.com/role/IncomeTaxesTables">
        <link:definition>9955518 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.firstwatch.com/role/SegmentInformationTables">
        <link:definition>9955519 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossPerCommonShareTables" roleURI="http://www.firstwatch.com/role/NetLossPerCommonShareTables">
        <link:definition>9955520 - Disclosure - Net Loss Per Common Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NatureofBusinessandOrganizationAdditionalInformationDetails" roleURI="http://www.firstwatch.com/role/NatureofBusinessandOrganizationAdditionalInformationDetails">
        <link:definition>9955521 - Disclosure - Nature of Business and Organization - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuesDisaggregationofRevenueDetails" roleURI="http://www.firstwatch.com/role/RevenuesDisaggregationofRevenueDetails">
        <link:definition>9955522 - Disclosure - Revenues - Disaggregation of Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuesDetailofContractLiabilitiesDetails" roleURI="http://www.firstwatch.com/role/RevenuesDetailofContractLiabilitiesDetails">
        <link:definition>9955523 - Disclosure - Revenues - Detail of Contract Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuesChangeinContractLiabilitiesDetails" roleURI="http://www.firstwatch.com/role/RevenuesChangeinContractLiabilitiesDetails">
        <link:definition>9955524 - Disclosure - Revenues - Change in Contract Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableDetails" roleURI="http://www.firstwatch.com/role/AccountsReceivableDetails">
        <link:definition>9955525 - Disclosure - Accounts Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilitiesDetails" roleURI="http://www.firstwatch.com/role/AccruedLiabilitiesDetails">
        <link:definition>9955526 - Disclosure - Accrued Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtLongTermDebtNetDetails" roleURI="http://www.firstwatch.com/role/DebtLongTermDebtNetDetails">
        <link:definition>9955527 - Disclosure - Debt - Long-Term Debt, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtLongTermDebtNetDetails_1" roleURI="http://www.firstwatch.com/role/DebtLongTermDebtNetDetails_1">
        <link:definition>9955527 - Disclosure - Debt - Long-Term Debt, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNarrativeDetails" roleURI="http://www.firstwatch.com/role/DebtNarrativeDetails">
        <link:definition>9955528 - Disclosure - Debt - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleofEstimatedFairValueoftheOutstandingDebtExcludingFinanceLeaseLiabilitiesandFinancingObligationsDetails" roleURI="http://www.firstwatch.com/role/DebtScheduleofEstimatedFairValueoftheOutstandingDebtExcludingFinanceLeaseLiabilitiesandFinancingObligationsDetails">
        <link:definition>9955529 - Disclosure - Debt - Schedule of Estimated Fair Value of the Outstanding Debt, Excluding Finance Lease Liabilities and Financing Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InterestRateSwapsDetails" roleURI="http://www.firstwatch.com/role/InterestRateSwapsDetails">
        <link:definition>9955530 - Disclosure - Interest Rate Swaps (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesLeaseAssetsandLeaseLiabilitiesDetails" roleURI="http://www.firstwatch.com/role/LeasesLeaseAssetsandLeaseLiabilitiesDetails">
        <link:definition>9955531 - Disclosure - Leases - Lease Assets and Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesComponentsofLeaseExpenseDetails" roleURI="http://www.firstwatch.com/role/LeasesComponentsofLeaseExpenseDetails">
        <link:definition>9955532 - Disclosure - Leases - Components of Lease Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesSupplementalCashFlowInformationDetails" roleURI="http://www.firstwatch.com/role/LeasesSupplementalCashFlowInformationDetails">
        <link:definition>9955533 - Disclosure - Leases - Supplemental Cash Flow Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesSupplementalInformationRelatedtoLeasesDetails" roleURI="http://www.firstwatch.com/role/LeasesSupplementalInformationRelatedtoLeasesDetails">
        <link:definition>9955534 - Disclosure - Leases - Supplemental Information Related to Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityandStockBasedCompensationScheduleofStockOptionsRollForwardDetails" roleURI="http://www.firstwatch.com/role/EquityandStockBasedCompensationScheduleofStockOptionsRollForwardDetails">
        <link:definition>9955535 - Disclosure - Equity and Stock-Based Compensation - Schedule of Stock Options Roll Forward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityandStockBasedCompensationScheduleofFairValueNonvestedOptionsatGrantDatesDetails" roleURI="http://www.firstwatch.com/role/EquityandStockBasedCompensationScheduleofFairValueNonvestedOptionsatGrantDatesDetails">
        <link:definition>9955536 - Disclosure - Equity and Stock-Based Compensation - Schedule of Fair Value Non-vested Options at Grant Dates (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityandStockBasedCompensationNarrativeDetails" roleURI="http://www.firstwatch.com/role/EquityandStockBasedCompensationNarrativeDetails">
        <link:definition>9955537 - Disclosure - Equity and Stock-Based Compensation - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityandStockBasedCompensationScheduleofNonvestedRestrictedStockUnitsActivityDetails" roleURI="http://www.firstwatch.com/role/EquityandStockBasedCompensationScheduleofNonvestedRestrictedStockUnitsActivityDetails">
        <link:definition>9955538 - Disclosure - Equity and Stock-Based Compensation - Schedule of Nonvested Restricted Stock Units Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityandStockBasedCompensationScheduleofUnrecognizedStockbasedCompensationExpenseDetails" roleURI="http://www.firstwatch.com/role/EquityandStockBasedCompensationScheduleofUnrecognizedStockbasedCompensationExpenseDetails">
        <link:definition>9955539 - Disclosure - Equity and Stock-Based Compensation - Schedule of Unrecognized Stock-based Compensation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesComponentsofIncomeTaxExpenseBenefitandEffectiveIncomeTaxRateDetails" roleURI="http://www.firstwatch.com/role/IncomeTaxesComponentsofIncomeTaxExpenseBenefitandEffectiveIncomeTaxRateDetails">
        <link:definition>9955540 - Disclosure - Income Taxes - Components of Income Tax Expense (Benefit) and Effective Income Tax Rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationNarrativeDetails" roleURI="http://www.firstwatch.com/role/SegmentInformationNarrativeDetails">
        <link:definition>9955541 - Disclosure - Segment Information - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationScheduleofSegmentReportingInformationbySegmentDetails" roleURI="http://www.firstwatch.com/role/SegmentInformationScheduleofSegmentReportingInformationbySegmentDetails">
        <link:definition>9955542 - Disclosure - Segment Information - Schedule of Segment Reporting Information, by Segment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossPerCommonShareDetails" roleURI="http://www.firstwatch.com/role/NetLossPerCommonShareDetails">
        <link:definition>9955543 - Disclosure - Net Loss Per Common Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="fwrg_PortionOfLongTermDebtCurrent" abstract="false" name="PortionOfLongTermDebtCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_TransactionIncomeExpenseNet" abstract="false" name="TransactionIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_RemeasurementsOfOperatingLeaseAssetsAndLeaseLiabilities" abstract="false" name="RemeasurementsOfOperatingLeaseAssetsAndLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_RemeasurementsOfFinanceLeaseAssetsAndLeaseLiabilities" abstract="false" name="RemeasurementsOfFinanceLeaseAssetsAndLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ChangeInCapitalExpendituresIncurredButNotYetPaid" abstract="false" name="ChangeInCapitalExpendituresIncurredButNotYetPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="fwrg_InRestaurantDiningSalesMember" abstract="true" name="InRestaurantDiningSalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ThirdPartyDeliverySalesMember" abstract="true" name="ThirdPartyDeliverySalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_TakeOutSalesMember" abstract="true" name="TakeOutSalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_RoyaltyAndSystemFundContributionsMember" abstract="true" name="RoyaltyAndSystemFundContributionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_InitialFeesMember" abstract="true" name="InitialFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityGiftCardRevenueCurrent" abstract="false" name="ContractWithCustomerLiabilityGiftCardRevenueCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenueCurrent" abstract="false" name="ContractWithCustomerLiabilityFranchiseFeeRevenueCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenueNoncurrent" abstract="false" name="ContractWithCustomerLiabilityFranchiseFeeRevenueNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ChangeInContractWithCustomerLiabilityGiftCardRevenueRollForward" abstract="true" name="ChangeInContractWithCustomerLiabilityGiftCardRevenueRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityGiftCardRevenue" abstract="false" name="ContractWithCustomerLiabilityGiftCardRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityGiftCardRevenueCashReceived" abstract="false" name="ContractWithCustomerLiabilityGiftCardRevenueCashReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityGiftCardRevenueRevenueRecognized" abstract="false" name="ContractWithCustomerLiabilityGiftCardRevenueRevenueRecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityGiftCardRevenueCumulativeCatchUpAdjustmentToRevenueModificationOfContract" abstract="false" name="ContractWithCustomerLiabilityGiftCardRevenueCumulativeCatchUpAdjustmentToRevenueModificationOfContract" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ChangeInContractWithCustomerLiabilityFranchiseFeeRevenueRollForward" abstract="true" name="ChangeInContractWithCustomerLiabilityFranchiseFeeRevenueRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenue" abstract="false" name="ContractWithCustomerLiabilityFranchiseFeeRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenueCashReceived" abstract="false" name="ContractWithCustomerLiabilityFranchiseFeeRevenueCashReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenueRevenueRecognized" abstract="false" name="ContractWithCustomerLiabilityFranchiseFeeRevenueRevenueRecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AccountsReceivableAfterAllowanceForCreditLossThirdPartyDeliveryProvidersCurrent" abstract="false" name="AccountsReceivableAfterAllowanceForCreditLossThirdPartyDeliveryProvidersCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AccountsReceivableAfterAllowanceForCreditLossFranchiseReceivablesCurrent" abstract="false" name="AccountsReceivableAfterAllowanceForCreditLossFranchiseReceivablesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AccountsReceivableAfterAllowanceForCreditLossRebatesCurrent" abstract="false" name="AccountsReceivableAfterAllowanceForCreditLossRebatesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AccountsReceivableAfterAllowanceForCreditLossGiftCardSalesCurrent" abstract="false" name="AccountsReceivableAfterAllowanceForCreditLossGiftCardSalesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AccountsReceivableAfterAllowanceForCreditLossOtherCurrent" abstract="false" name="AccountsReceivableAfterAllowanceForCreditLossOtherCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AccruedCreditCardFeesCurrent" abstract="false" name="AccruedCreditCardFeesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_AccruedLiabilitiesOperatingLeasesContingentRentalsCurrent" abstract="false" name="AccruedLiabilitiesOperatingLeasesContingentRentalsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_TermFacilityMember" abstract="true" name="TermFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_OtherDebtMember" abstract="true" name="OtherDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_NewFacilitiesMember" abstract="true" name="NewFacilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_FinancingObligationsMember" abstract="true" name="FinancingObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_NewRevolvingCreditFacilityMember" abstract="true" name="NewRevolvingCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_AdjustedLeverageRateMember" abstract="true" name="AdjustedLeverageRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_NumberOfAdditionalInterestRateDerivativesEnteredInto" abstract="false" name="NumberOfAdditionalInterestRateDerivativesEnteredInto" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="fwrg_FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationCurrent" abstract="false" name="FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationNoncurrent" abstract="false" name="FinanceLeaseRightOfUseAssetAfterAccumulatedAmortizationNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_LeaseRightOfUseAsset" abstract="false" name="LeaseRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_LeaseLiability" abstract="false" name="LeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_OperatingLeasesContingentRentals" abstract="false" name="OperatingLeasesContingentRentals" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="fwrg_WeightedAverageRemainingLeaseTermAbstract" abstract="true" name="WeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fwrg_LeasesWeightedAverageDiscountRateAbstract" abstract="true" name="LeasesWeightedAverageDiscountRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fwrg_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="fwrg_ShareBasedPaymentArrangementTranche1.1Member" abstract="true" name="ShareBasedPaymentArrangementTranche1.1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ShareBasedPaymentArrangementTranche1.2Member" abstract="true" name="ShareBasedPaymentArrangementTranche1.2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ShareBasedPaymentArrangementTranche1.3Member" abstract="true" name="ShareBasedPaymentArrangementTranche1.3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ShareBasedPaymentArrangementTrancheFourMember" abstract="true" name="ShareBasedPaymentArrangementTrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ShareBasedPaymentArrangementTranche4.1Member" abstract="true" name="ShareBasedPaymentArrangementTranche4.1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ShareBasedPaymentArrangementTranche4.2Member" abstract="true" name="ShareBasedPaymentArrangementTranche4.2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ShareBasedPaymentArrangementTranche4.3Member" abstract="true" name="ShareBasedPaymentArrangementTranche4.3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="fwrg_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="fwrg_ReportableSegmentMember" abstract="true" name="ReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
