01 - In a large bowl, whisk together the buttermilk, hot sauce, sea salt, and black pepper until fully combined. Submerge the chicken pieces in the marinade, cover tightly, and refrigerate for a minimum of 2 hours or up to overnight for deeper flavor penetration.
02 - In a separate large bowl or shallow dish, combine the 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 each chicken piece from the buttermilk marinade, allowing the excess to drip off. Press each piece firmly into the seasoned flour mixture, ensuring an even and complete coating on all sides. Place the dredged chicken on a wire rack and let it rest for 10 minutes to allow the coating to adhere properly.
04 - Pour approximately 2 inches of vegetable oil into a heavy-bottomed skillet or deep fryer. Heat the oil over medium-high heat until it reaches 350°F (175°C), using a thermometer to verify the temperature for consistent results.
05 - Carefully lower the coated chicken pieces into the hot oil in batches, avoiding overcrowding the pan. Fry for 12 to 15 minutes, turning occasionally, until the exterior is deep golden brown and the internal temperature registers 165°F (74°C). Transfer the finished pieces to a paper towel-lined plate or wire rack to drain.
06 - While the chicken fries, melt the unsalted butter in a small saucepan over medium heat. Add the honey, hot sauce, crushed red pepper flakes if using, and a pinch of salt. Stir continuously and let the mixture simmer for 1 minute until all ingredients are fully incorporated and the glaze is smooth.
07 - Drizzle the spicy honey butter glaze generously over the fried chicken, or toss the chicken pieces directly in the glaze to coat evenly. Serve immediately while the chicken remains hot and crispy.