Preheat oven to 375°F. Combine all coating ingredients into a large mixing bowl.
Line a large baking sheet with parchment paper. Brush oil across surface.
Dip chicken drumsticks, first in egg and then coat in flour mixture. Dip again in egg and again in flour. Place onto baking sheet. Repeat with remaining chicken. Bake in oven for about 25 minutes. Flip chicken over to other side and bake another 25 minutes. At this point the chicken should be cooked through and the batter should be starting to turn a golden brown. Bake at 10 minute intervals, checking on chicken skin and flipping over again if needed. Cook until chicken is a dark golden brown, about an additional 10-20 minutes, depending on the size of your drumsticks.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.