01 - Preheat oven to 425°F. Line a baking sheet with parchment paper. In a large bowl, whisk together flour, baking powder, baking soda, salt, and sugar. Add cold butter and cut into flour mixture until it resembles coarse crumbs. Stir in cold buttermilk until dough just comes together.
02 - Turn dough onto a floured surface, gently pat to 1-inch thickness, and cut out 8 rounds. Place on the baking sheet, brush tops with buttermilk, and bake for 12 to 15 minutes or until golden brown. Let cool slightly.
03 - Slice each chicken breast in half horizontally to create 4 pieces. In a bowl, combine buttermilk and hot sauce. Soak the chicken pieces for at least 20 minutes.
04 - In another bowl, mix flour, cornstarch, paprika, garlic powder, salt, and pepper. Heat vegetable oil in a deep skillet to 350°F. Dredge marinated chicken in flour mixture, pressing to adhere. Fry chicken pieces for 4 to 5 minutes per side, until golden and cooked through. Drain on paper towels.
05 - In a small saucepan, combine honey, hot sauce, and red pepper flakes. Warm over low heat for 2 to 3 minutes, stirring until combined. Remove from heat.
06 - Split each biscuit. Place a piece of fried chicken on the bottom half, drizzle generously with hot honey, and top with remaining biscuit half. Serve warm.