In a bowl, whisk together buttermilk and hot sauce (if using). Add chicken breasts, ensuring they are fully submerged. Cover and refrigerate for at least 30 minutes, or up to 4 hours.
1 cup buttermilk, 1 tablespoon hot sauce, 4 boneless, skinless chicken breasts
In a separate shallow dish, whisk together flour, cornstarch, paprika, garlic powder, onion powder, cayenne pepper (if using), salt, and pepper.
1 cup all-purpose flour, 1/2 cup cornstarch, 2 teaspoons paprika, 1 teaspoon garlic powder, 1 teaspoon onion powder, 1/2 teaspoon cayenne pepper, 1 teaspoon salt, 1/2 teaspoon black pepper
Remove one chicken breast from the buttermilk mixture, letting excess drip off. Dredge in the flour mixture, pressing to coat thoroughly. Repeat with remaining chicken breasts.
4 boneless, skinless chicken breasts, 1 cup buttermilk, 1 cup all-purpose flour, 1/2 cup cornstarch, 2 teaspoons paprika, 1 teaspoon garlic powder, 1 teaspoon onion powder, 1/2 teaspoon cayenne pepper, 1 teaspoon salt, 1/2 teaspoon black pepper
Heat vegetable oil in a large skillet over medium-high heat until it reaches 350°F (175°C). Carefully place dredged chicken breasts in the hot oil, being careful not to overcrowd the pan.
2 cups vegetable oil, 4 boneless, skinless chicken breasts
Fry for about 5-7 minutes per side, or until golden brown and cooked through. Internal temperature should reach 165°F (74°C).
Remove chicken from the pan and place on a wire rack to drain excess oil. While chicken rests, mix all sauce ingredients together in a small bowl.
1/2 cup mayonnaise, 2 tablespoons sweet pickle relish, 1 tablespoon yellow mustard, 1 teaspoon white vinegar, 1/4 teaspoon garlic powder, 1/4 teaspoon paprika
Spread sauce on both halves of the toasted brioche buns. Place a lettuce leaf on the bottom bun, followed by the crispy chicken breast. Add tomato and pickles, if desired. Top with the other half of the bun.
1/2 cup mayonnaise, 2 tablespoons sweet pickle relish, 1 tablespoon yellow mustard, 1 teaspoon white vinegar, 1/4 teaspoon garlic powder, 1/4 teaspoon paprika, 4 brioche buns, lettuce leaves, sliced tomatoes, sliced pickles, 4 boneless, skinless chicken breasts
Serve Immediately: Enjoy your delicious Crispy Chicken Sandwich Recipe right away!