In a bowl, mix together the buttermilk, paprika, garlic and onions powders, salt and pepper. Marinate the chicken in this mixture for at least 2 hours or overnight.
Once chicken has marinated, remove it from the fridge.
In a bowl or plastic bag, combine the flour, cornstarch, paprika, garlic and onion powders, and salt.
Dredge the tenders in the seasoned flour. Set on a wire rack to rest for 5 minutes.
Fill a pot with 2 inches of high-heat oil. Heat it to about 350 degrees F. Fry the tenders in batches, about 4 minutes, being careful not to crowd them so they fry evenly.