Exhibit 23

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-48999) pertaining to the Papa Johns International, Inc. 401(k) Plan of our report dated May 26, 2005, with respect to the financial statements and schedule of the Papa Johns International, Inc. 401(k) Plan included in this Annual Report (Form 11-K) for the year ended December 31, 2004.

/s/ Ernst & Young LLP