Put chicken legs in a bowl, add buttermilk, and mix well.
Marinate for at least 30 minutes in the fridge.
Combine the spices and breadcrumbs in a shallow bowl.
Dip chicken pieces in the breadcrumb mixture.
Preheat at the air fryer at 400°F for 3 minutes.
Lightly oil the air fryer basket.
Put the chicken drumsticks in a single layer in the basket (don’t overcrowd the basket)
Use an oil mister or brush, to coat the chicken very lightly (all over) with olive oil.
Cook the chicken for 25 minutes.
Shake the basket halfway through. Apply some oil onto the chicken if necessary.
Check for doneness and serve.