01 -
Whisk the buttermilk, egg, hot sauce, and salt in a large bowl. Add the chicken, turn to coat, cover, and refrigerate for at least 2 hours or up to overnight.
02 -
Heat the oven to 400°F (200°C). Line a rimmed baking sheet with foil and place a wire rack on top. Coat the rack well with oil spray.
03 -
In a wide shallow dish, whisk the flour, cornstarch, baking powder, paprika, garlic powder, onion powder, thyme, basil, oregano, white pepper, black pepper, celery salt, and cayenne.
04 -
Lift each piece from the marinade and let the excess drip off. Press firmly into the flour mixture until fully coated. Set on the rack and rest for 10 minutes.
05 -
Spray the chicken generously with oil, covering any dry flour spots. Bake for 20 minutes, carefully turn the pieces, spray again if needed, and bake 20-25 minutes more.
06 -
The chicken is done when the crust is deep golden and the thickest part reaches 165°F. Rest on the rack for 5 minutes before serving.