01 - Preheat oven to 425°F. Line baking sheet with parchment paper. Whisk flour, baking powder, baking soda, salt, and sugar in large bowl. Cut cold butter into flour mixture until coarse crumbs form. Stir in cold buttermilk until dough just combines.
02 - Turn dough onto floured surface. Gently pat to 1-inch thickness. Cut out 8 rounds. Place on prepared baking sheet. Brush tops with buttermilk. Bake 12 to 15 minutes until golden brown. Cool slightly.
03 - Slice each chicken breast horizontally to create 4 cutlets. Combine buttermilk and hot sauce in bowl. Submerge chicken pieces. Marinate at least 20 minutes.
04 - Mix flour, cornstarch, paprika, garlic powder, salt, and pepper in separate bowl.
05 - Pour vegetable oil into deep skillet. Heat to 350°F.
06 - Dredge marinated chicken in flour mixture. Press firmly to coat. Fry pieces 4 to 5 minutes per side until golden and cooked through. Drain on paper towels.
07 - Combine honey, hot sauce, and red pepper flakes in small saucepan. Warm over low heat 2 to 3 minutes. Stir until fully blended. Remove from heat.
08 - Split each biscuit horizontally. Place fried chicken on bottom half. Drizzle generously with hot honey. Cover with biscuit top. Serve warm.