The Popeyes secret menu features a variety of off-the-menu items that loyal fans enjoy customizing. While not officially listed, some of the popular secret menu items include the "Cajun Style Fries" with extra seasoning, a "Chicken Tenders Sandwich," or even a "Po' Boy" made with chicken strips. Keep in mind that availability may vary by location, so it's always a good idea to ask your local Popeyes if they're able to make these special requests.