Prepare the Chicken

1. Prep the Chicken: Start by flattening the chicken breasts to an even thickness using a meat mallet or rolling pin. This ensures even cooking. If the breasts are too large, you can cut them in half horizontally to make them more manageable for sandwich-sized portions.
2. Make the Coating: In a shallow bowl, combine the flour, garlic powder, paprika, cayenne pepper, salt, and black pepper. In another bowl, whisk the egg and buttermilk together until smooth.
3. Coat the Chicken: Dip each piece of chicken into the egg and buttermilk mixture, then dredge it in the seasoned flour, making sure it’s evenly coated. Set the coated chicken aside on a plate.

Fry the Chicken

4. Heat the Oil: In a large frying pan, pour enough vegetable oil to cover the bottom with about ½ inch of oil. Heat the oil over medium heat until it reaches 350°F (175°C). You can check the temperature by dropping a small piece of bread into the oil—if it browns within a few seconds, the oil is ready.
5. Fry the Chicken: Carefully add the coated chicken breasts to the hot oil, making sure not to overcrowd the pan. Fry the chicken for 4-5 minutes per side, or until golden brown and cooked through. The internal temperature of the chicken should reach 165°F (74°C). Once done, remove the chicken from the oil and place it on a plate lined with paper towels to drain any excess oil.

Make the Buffalo Sauce

6. Prepare the Sauce: While the chicken is frying, melt the butter in a saucepan over low heat. Add the hot sauce, apple cider vinegar, garlic powder, and sugar (if using). Stir until everything is well combined and the sauce is heated through. Taste the sauce and adjust the spice level or sweetness to your liking by adding more hot sauce or sugar.
7. Coat the Chicken in Sauce: Once the chicken is done frying, dip each piece into the buffalo sauce, coating it generously. You can also drizzle the sauce over the chicken if you prefer less sauce.

Assemble the Sandwiches

8. Prepare the Buns: Toast the sandwich buns lightly on a skillet or in the oven to give them a slight crunch. This helps them hold up better to the sauce and prevents them from becoming soggy.
9. Assemble the Sandwich: Place a piece of buffalo-coated chicken on the bottom half of each bun. Top with a layer of fresh lettuce, a slice of tomato, and pickles if desired. Add a drizzle of ranch or blue cheese dressing for added creaminess to balance the heat.
10. Serve: Place the top half of the bun on the sandwich and serve immediately. These sandwiches are best enjoyed fresh and hot.