01 - Whisk together buttermilk, hot sauce, salt, black pepper, garlic powder, and paprika in a mixing bowl until fully combined. Submerge chicken thighs in the marinade, ensuring complete coverage. Refrigerate for at least 20 minutes, or overnight for optimal flavor penetration.
02 - Combine flour, cornstarch, salt, paprika, cayenne pepper, onion powder, and garlic powder in a large bowl. Whisk thoroughly to distribute spices evenly throughout the flour mixture.
03 - Remove chicken from marinade, allowing excess liquid to drip off. Press each thigh firmly into the flour mixture, turning to coat all sides. Ensure a thick, even coating adheres to the meat. Transfer coated pieces to a wire rack.
04 - Pour vegetable oil into a deep skillet or Dutch oven to a depth of 1 inch. Heat oil to 350°F, maintaining steady temperature throughout frying process.
05 - Place chicken pieces carefully into hot oil, working in batches to avoid overcrowding. Fry for 5 to 7 minutes per side until golden brown and crispy. Verify internal temperature reaches 165°F for safe consumption. Transfer cooked chicken to wire rack or paper towels to drain.
06 - Combine shredded cabbage, grated carrot, mayonnaise, and apple cider vinegar in a bowl. Season with salt and pepper to taste. Mix thoroughly until all ingredients are evenly coated.
07 - Lightly toast burger buns if desired. Spread mayonnaise on bottom bun halves. Layer lettuce leaves, fried chicken thighs, prepared slaw, and pickle slices. Top with remaining bun halves.
08 - Present burgers while chicken remains hot and crispy for optimal texture and flavor experience.