Step 1: Marinate the Chicken
* In a large bowl, combine the buttermilk, salt, black pepper, paprika, garlic powder, onion powder, cayenne pepper, and hot sauce.
* Add the chicken pieces and coat well.
* Cover and refrigerate for 4 hours or overnight.
Step 2: Prepare the Coating
* In a separate bowl, mix the flour, cornstarch, baking powder, salt, black pepper, paprika, garlic powder, onion powder, and oregano.
* Remove the chicken from the marinade and coat each piece thoroughly in the flour mixture.