Creating Spicy Nashville Hot Chicken Pizza is simple when you follow these steps:

1. Marinate the Chicken: In a bowl, combine the buttermilk and chicken breasts. Let it marinate in the refrigerator for at least 30 minutes.

2. Prepare the Flour Mixture: In another bowl, whisk together the flour, cayenne pepper, paprika, garlic powder, onion powder, salt, and black pepper.

3. Coat the Chicken: Remove the chicken from the buttermilk and let the excess drip off. Dredge the chicken in the flour mixture until fully coated.

4. Fry the Chicken: In a large skillet, heat oil over medium-high heat. Fry the chicken pieces for about 5-7 minutes on each side, or until golden brown and cooked through. Remove from the skillet and place on paper towels to drain.

5. Prepare the Pizza Dough: Preheat your oven to 475°F (245°C). Roll out your pizza dough on a floured surface to your desired thickness.

6. Assemble the Pizza: Spread a thin layer of ranch dressing over the pizza dough. Sprinkle the shredded mozzarella cheese evenly across the top.

7. Add the Chicken: Slice the fried chicken into strips and distribute them evenly over the cheese.

8. Bake the Pizza: Place the pizza in the preheated oven and bake for 12-15 minutes, or until the crust is golden and the cheese is bubbly.

9. Prepare the Spicy Butter: While the pizza is baking, mix the melted butter with additional cayenne pepper to taste.

10. Finish the Pizza: Once baked, remove the pizza from the oven. Drizzle the spicy butter over the top and add pickles as desired.

11. Slice and Serve: Let the pizza cool for a few minutes before slicing it into wedges.