The first step is to clean the chicken. Add ⅓ cup of vinegar and rinse a couple of times with cool water.
Next, whisk one egg into a mixing bowl. Then, add melted butter, salt, black pepper, paprika, oregano, onion powder, garlic powder, and milk. Whisk until thoroughly blended.
Then, marinate the chicken legs in the batter for at least 30 minutes.
Season the flour with salt, black pepper, paprika, oregano, onion powder, and garlic powder in a different container. Dredge the marinated chicken legs in the seasoned flour one at a time, tapping off any excess flour. Heat the oil while the coated legs are placed on a racking tray.