Pat the chicken drumsticks dry with paper towels.
Drizzle the olive oil over the drumsticks and toss until evenly coated.
Gently pull the skin over any exposed meat where possible.
In a bowl, combine the flour, baking powder, sweet paprika, chili powder, garlic granules, dried herbs, sea salt, and black pepper.
Coat each drumstick thoroughly in the seasoning mixture.
Arrange the drumsticks in a single layer in the air fryer basket or drawers.
Spray generously with cooking oil spray.
Cook the Air Fryer Crispy Chicken Drumsticks at 180°C (350°F) for 20 minutes.
Shake the basket or drawers halfway through cooking for even browning.
Turn the drumsticks over, increase the temperature to 200°C (390°F), and cook for an additional 15 minutes.
Ensure the internal temperature reaches 75°C (165°F).
Serve immediately while hot and crispy.