Creating Nashville Hot Chicken Sandwiches can be straightforward if you follow these simple steps:

1. Marinate Chicken: In a bowl, combine buttermilk and hot sauce. Add chicken thighs, ensuring they are well coated. Cover and refrigerate for at least 30 minutes, or overnight for best flavor.
2. Prepare Dry Mixture: In a separate bowl, whisk together flour, paprika, cayenne pepper, garlic powder, onion powder, salt, and black pepper.
3. Heat Oil: In a large skillet or deep fryer, heat vegetable oil over medium-high heat until it reaches 350°F (175°C).
4. Coat Chicken: Remove chicken from the marinade, allowing excess liquid to drip off. Dredge each thigh in the flour mixture, pressing lightly to ensure an even coating.
5. Fry Chicken: Carefully place the coated chicken in the hot oil. Fry for 6-8 minutes per side, or until golden brown and cooked through. Use a meat thermometer to ensure the internal temperature reaches 165°F (75°C).
6. Drain Oil: Once cooked, transfer chicken to a wire rack lined with paper towels to drain excess oil.
7. Prepare Sauce: In a small bowl, mix together additional cayenne pepper, paprika, and a spoonful of the frying oil to create a spicy sauce.
8. Coat Chicken with Sauce: Brush the sauce generously over the fried chicken while it is still hot.
9. Assemble Sandwiches: Place the spicy chicken on the sandwich buns. Top with dill pickles, sliced tomatoes, and coleslaw if desired.
10. Serve Immediately: Enjoy your Nashville Hot Chicken Sandwiches while they are hot and crispy!