01 - In a large bowl, whisk together buttermilk, hot sauce, sea salt, and black pepper until well combined. Add the chicken pieces, turning to coat evenly. Cover tightly and refrigerate for at least 2 hours or up to overnight for maximum flavor penetration.
02 - In a separate large bowl, combine all-purpose flour, cornstarch, paprika, garlic powder, onion powder, cayenne pepper, salt, and black pepper. Whisk thoroughly to distribute all seasonings evenly throughout the flour mixture.
03 - Remove chicken pieces from the buttermilk marinade, allowing excess liquid to drip off. Dredge each piece in the seasoned flour mixture, pressing firmly on all sides to ensure a thick, even coating. Place coated pieces on a wire rack and let rest for 10 minutes to allow the coating to adhere properly.
04 - Pour vegetable oil to a depth of 2 inches into a heavy-bottomed skillet or deep fryer. Heat over medium-high heat until the oil reaches 350°F (175°C). Use a thermometer to monitor and maintain consistent temperature throughout frying.
05 - Carefully lower coated chicken pieces into the hot oil in batches, avoiding overcrowding. Fry for 12–15 minutes, turning occasionally, until the exterior is deep golden brown and the internal temperature registers 165°F (74°C). Transfer finished pieces to a paper towel-lined plate or wire rack to drain.
06 - While the chicken fries, melt unsalted butter in a small saucepan over medium heat. Stir in honey, hot sauce, crushed red pepper flakes if using, and a pinch of salt. Bring to a gentle simmer and cook for 1 minute until the glaze is smooth and well blended.
07 - Drizzle the spicy honey butter glaze generously over the fried chicken, or toss the pieces directly in the saucepan to coat evenly. Serve immediately while the coating remains crisp.