Marinate the chicken: Slice the breasts to even thickness. Stir buttermilk with hot sauce, salt, and pepper. Soak chicken pieces for at least 30 minutes, or up to 4 hours in the fridge.
Prep the coating: In a bowl, mix flour, paprika, garlic powder, cayenne, salt, and pepper. This is your flavor armor—don’t skip the seasonings.
Dredge and rest: Remove chicken from the marinade, letting excess drip off. Dredge in the seasoned flour until fully coated. Place on a rack for 10 minutes to set the crust.
Heat and fry: Pour enough oil to shallow-fry (about 1/2 inch). Heat to 350°F (175°C). Fry chicken 3–4 minutes per side until golden and cooked through. Rest on paper towels briefly.
Toast the buns: Lightly butter the buns and toast them in a skillet or grill until golden. This adds flavor and helps hold the sandwich together.
Assemble: Spread mayo or spicy mayo on the buns. Add lettuce or pickles if you like. Place the crispy chicken on the bun, then top with tomatoes or cheese if using. Cap with the other bun.
Serve immediately: This sandwich is best hot and crunchy—because soggy is never the vibe.