01 - Combine buttermilk and hot sauce in a bowl. Add chicken thighs, ensuring they're fully submerged. Cover and refrigerate for at least 30 minutes, up to overnight for maximum flavor penetration.
02 - Whisk together flour, sugar, baking powder, and salt in a large bowl. In a separate bowl, beat eggs, buttermilk, melted butter, and vanilla. Pour wet mixture into dry ingredients and stir just until combined—small lumps are fine. Set aside.
03 - Mix flour, cornmeal, Cajun seasoning, paprika, garlic powder, onion powder, salt, and pepper in a shallow dish until evenly distributed.
04 - Remove chicken from marinade, allowing excess liquid to drip off. Press each piece firmly into the seasoned flour mixture, turning to coat all sides thoroughly. Shake off excess coating.
05 - Heat 1 inch of vegetable oil in a deep skillet to 350°F. Fry chicken pieces for 5-7 minutes per side until golden brown and crispy. Internal temperature should reach 165°F. Transfer to paper towels to drain.
06 - Preheat waffle iron and lightly grease with nonstick spray. Pour approximately 1/2 cup batter per waffle and cook according to manufacturer instructions until golden and crisp.
07 - Place a hot waffle on each plate. Top with crispy Cajun fried chicken and drizzle generously with maple syrup. Garnish with chopped chives or parsley if desired.