Pat the chicken wings thoroughly dry with paper towels.
In a small bowl, combine the salt, garlic powder, onion powder, paprika, cayenne pepper, and black pepper.
Stir the seasoning mixture until evenly combined.
Sprinkle the seasoning mixture over both sides of the chicken wings.
Turn the wings as needed to ensure they are evenly seasoned.
Brush the chicken wings with prepared yellow mustard until each piece is fully coated.
Place the all-purpose flour in a shallow dish or bowl.
Dredge each mustard-coated chicken wing in the flour.
Coat each wing completely, then shake off any excess flour.
Add the peanut oil to a Dutch oven or deep fryer.
Heat the oil until hot. To test the oil, sprinkle a small amount of flour into it; if the flour bubbles immediately, the oil is ready.
Carefully place the coated chicken wings into the hot oil, working in batches if necessary.
Fry the wings for approximately 6 minutes on each side, or until golden brown and fully cooked.
Ensure the juices run clear and the chicken is cooked through before removing from the oil.
Transfer the fried chicken wings to a paper towel-lined plate or wire rack to drain.
Repeat the frying process with the remaining wings.
Serve warm.