01 - In a large bowl, whisk together the buttermilk, hot sauce, sea salt, and black pepper until well combined.
02 - Add the chicken pieces to the marinade, turning to coat evenly. Cover tightly and refrigerate for at least 2 hours, or up to overnight for deeper flavor penetration.
03 - 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 until uniformly blended.
04 - Remove chicken pieces from the marinade, allowing excess buttermilk to drip off. Dredge each piece thoroughly in the flour mixture, pressing firmly on all sides to ensure a complete, even coating. Arrange coated pieces on a wire rack and let rest for 10 minutes to allow the coating to adhere.
05 - 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 temperature accurately.
06 - Carefully lower chicken pieces into the hot oil in batches, avoiding overcrowding. Fry for 12–15 minutes, turning occasionally, until deeply golden brown and the internal temperature reaches 165°F (74°C). Transfer finished pieces to a paper towel–lined plate or wire rack to drain.
07 - 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 simmer for 1 minute until the glaze is smooth and well blended.
08 - Drizzle the spicy honey butter glaze generously over the fried chicken, or toss the pieces directly in the glaze for full coverage. Serve immediately while hot and crispy.