Line a cookie sheet with foil. Grease well. Mix first 5 ingredients well. Dredge wings in flour mixture, place on greased pan, then cover and refrigerate for at least 1 hour. Preheat oven to 425 degrees. Melt butter and mix in the hot pepper sauce, garlic powder, and black pepper. Dip wings in the sauce then place on prepared cookie sheet. Bake for 30 minutes, then turn wings and continue baking for another 30 minutes or until done. Wings should be crispy and delicious!