This sandwich disappeared from my plate in minutes! Crispy chicken with fiery Nashville spice, cool lettuce, and smoky bacon on a toasted bun.
Marinate the chicken breasts in buttermilk, 1 tsp kosher salt, and 1 tsp hot sauce for at least 30 minutes (up to 2 hours) to tenderize and add flavor. Copycat tip: Buttermilk soak creates tender, juicy chicken like Carl's Jr.'s signature hand-breaded fillets.
Prepare the breading: combine flour, panko breadcrumbs, 1 tsp kosher salt, black pepper, 1 tsp cayenne pepper, garlic powder, and paprika in a shallow dish. In a separate bowl, whisk eggs with 1 tbsp hot sauce. Remove chicken from marinade, dip in egg, then coat well in seasoned flour-panko mixture for a thick, crispy exterior.
Heat vegetable oil to 350°F in a heavy skillet. Fry chicken breasts until golden brown and crisp, about 4-5 minutes per side. Internal temperature should reach 165°F. Place fried breasts on a wire rack to drain.
While chicken rests, prepare spicy Nashville mayo: mix mayonnaise, remaining hot sauce, honey, and 1 tsp cayenne pepper until smooth. Copycat tip: This spicy, creamy sauce mimics Carl's Jr.'s signature Nashville heat finish.
Toast sesame seed buns lightly on a dry skillet or under a broiler for 1-2 minutes for a premium toasted texture. Cook bacon in a skillet over medium heat until crispy but still tender. Immediately top hot chicken with a slice of Swiss cheese to melt.
Build the sandwich: Spread Nashville mayo on both bun halves. Layer as follows—bottom bun, pickle chips, fried chicken with melted Swiss, bacon slices, lettuce, tomato, top bun. Press gently and serve hot.