Pat the chicken wings completely dry with paper towels, then place them in a large bowl.
Combine the baking powder, garlic powder, salt, and black pepper, then sprinkle over the wings and toss until evenly coated.
Preheat the air fryer to 380°F and arrange the wings in a single layer, working in batches if necessary.
Cook for 12 minutes, then flip the wings and cook for another 12-13 minutes until golden brown and crispy.
While the wings cook, mix together the buffalo sauce and melted butter in a large bowl.
Transfer the cooked wings to the bowl with the sauce and toss until completely coated.
Serve immediately with ranch or blue cheese dressing on the side.