In a large bowl, whisk together buttermilk, garlic powder, onion powder, and hot sauce.
Add chicken pieces to the marinade, ensuring they’re fully coated. Cover and refrigerate for at least 4 hours (or overnight for maximum flavor).
In a small bowl, mix all the seasoning blend ingredients. Set aside.
In a shallow bowl, combine flour, cornstarch, and half of the seasoning blend. Reserve the remaining seasoning for later.
