Slice chicken breasts into fillets and marinate in 1 cup buttermilk for 20–30 minutes.
In a shallow bowl, combine 1 cup flour, garlic powder, paprika, black pepper, and salt for the coating.
Heat oil in a frying pan over medium heat, dredge marinated chicken in seasoned flour, and fry until crispy and cooked through. Drain on a wire rack or paper towels.
Warm honey in a small saucepan with hot sauce, stirring and adjusting heat to taste.
In a mixing bowl, combine 2 cups flour, baking powder, salt, and sugar. Cut in 6 tablespoons cold butter until crumbly, then stir in ¾ cup buttermilk until a soft dough forms.
Turn dough onto a floured surface, fold gently, and cut into 6 biscuits. Bake at 425°F (220°C) for 12–15 minutes until golden brown; brush with butter if desired.
Split biscuits, place a fried chicken fillet inside each, drizzle with hot honey, close the biscuit, and serve immediately.