Season chicken drumsticks with ingredients under "Chicken Marinade" and massage seasoning into drumsticks with hands. Set aside to marinate.
In a bowl, add dry batter ingredients and whisk well.
Take 1 measuring cup of dry batter and transfer to a separate bowl. Set that aside.
Then to your REMAINING dry ingredients (the bowl with more dry batter), whisk in ½ cup water to create a wet batter. You should now have a dry and wet batter in two separate bowls.
Evenly dredge drumsticks into dry batter first ensuring no empty spots. Then dredge into wet batter and then back into dry batter.
Transfer coated drumsticks to air fryer basket. Give each one enough room so air can reach it. Depending on the size of your air fryer, you may need to air fry in multiple batches. Important: Try to angle the drumsticks so that the least amount of surface area touches the weaved basket as this can cause for batter to tear away from chicken if you’re not gentle flipping over it in next steps.
Spray or gently brush 1 tbsp of vegetable oil on one side of the drumsticks.
Air fry on one side at 375 F for 11-12 minutes until crispy and golden.
GENTLY turn drumsticks over, spray or brush on the other side with remaining vegetable oil.
Air fry for 11-12 minutes at 375 F or until golden brown and crispy. Serve & enjoy with fresh lemon juice!