Preheat your oven to 400°F. Place a rack over a baking sheet lined with foil. Gently spray the rack with olive oil.
Use paper towels to pat the chicken drumsticks dry.
Start by dipping each drumstick in flour, then in egg, and then firmly press it into the breadcrumb mixture to ensure the crumbs adhere thoroughly.
Spray them lightly with olive oil. Bake in the preheated oven for 45 minutes, turning once halfway through, or until the internal temperature reaches 165°F.