Power of Attorney for Denise P. Lauer at Portillo's Inc.

Denise P. Lauer, Chief Marketing Officer of Portillo's Inc., has executed a Power of Attorney document on September 19, 2025. This document appoints Michelle Hook, Kelly M. Kaiser, and Christine DeCicco as her attorneys-in-fact, granting them authority to act on her behalf in matters related to SEC filings. Specifically, they are authorized to prepare and submit Forms 3, 4, and 5, manage her EDGAR account, and perform any necessary actions related to SEC compliance. The Power of Attorney remains in effect until Lauer is no longer required to file these forms, unless revoked earlier in writing.