01 - Combine buttermilk and hot sauce in a bowl. Submerge chicken thighs completely. Cover and refrigerate minimum 30 minutes, optimally overnight for maximum flavor penetration.
02 - Whisk flour, sugar, baking powder, and salt in a large bowl. In separate vessel, whisk eggs, buttermilk, melted butter, and vanilla. Pour wet mixture into dry ingredients. Stir until just combined - small lumps acceptable. Set aside.
03 - Mix flour, cornmeal, Cajun seasoning, paprika, garlic powder, onion powder, salt, and black pepper in shallow dish until uniform. Remove chicken from marinade, allow excess liquid to drip away. Press each thigh into flour mixture, ensuring thorough coverage.
04 - Heat vegetable oil to depth of 1 inch in deep skillet, maintaining 350°F temperature. Fry chicken pieces 5-7 minutes per side until golden brown with internal temperature reaching 165°F. Transfer to paper towels to drain excess oil.
05 - Preheat waffle iron. Lightly coat cooking surfaces with nonstick spray. Pour approximately 1/2 cup batter per waffle. Close lid and cook per manufacturer instructions until golden brown and crispy.
06 - Position hot waffle on each plate. Arrange fried chicken atop waffle. Generously drizzle with maple syrup. Garnish with fresh chives or parsley if desired. Serve immediately while hot.