Pat the chicken drumettes dry with paper towels and place them in a large mixing bowl.
Drizzle the olive oil over the drumettes and toss with tongs or your hands until evenly coated.
Sprinkle garlic powder, Italian seasoning, onion powder, black pepper, smoked paprika, cayenne, and kosher salt over the chicken and toss until the wings are fully coated with the seasoning.
Preheat the air fryer to 400°F (204°C) for 5 minutes.
Arrange the seasoned drumettes in a single layer in the air fryer basket, leaving space between pieces; cook at 400°F for 20 minutes, flipping halfway through.
Cook remaining drumettes in batches as needed to avoid overcrowding so they crisp evenly.