Preheat the air fryer to 390 degrees F (198 degrees C), if recommended by the manufacturer. Pat chicken thighs dry with paper towels.
For sauce, combine onion powder, garlic powder, smoked paprika, salt, and pepper in a small bowl. Stir in honey and Dijon mustard.
Spray one side of chicken thighs with olive oil spray, and place oiled side down in the air fryer in a single layer. Brush the tops of the chicken thighs with the sauce.
Air fry at 390 degrees F (198 degrees C) for 8 minutes.
Carefully turn chicken thighs, and brush with remaining sauce. Continue air frying until internal temperature of chicken reaches 165 degrees F (74 degrees C), when tested with an instant-read thermometer, 6 to 8 minutes more. Serve warm.
