In a small bowl, mix together oil, garlic, basil, lemon juice, Dijon mustard, salt, and pepper. Add crushed red pepper, if using. Whisk to combine. Reserve 1/4 of the marinade.
2 Tbsp avocado or olive oil, 2 cloves of garlic, 1 tsp dried basil, 1.5 Tbsp lemon juice, 1 Tbsp Dijon mustard, 1 tsp salt, 1/4 tsp black pepper, 1/8 tsp crushed red pepper
Add chicken drumsticks to large bowl or Ziploc bag. Pour remaining 3/4 of marinade over the drumsticks and toss to coat. Cover bowl or seal bag and marinate for 30 minutes (up to overnight) in the fridge.
2.5 lbs chicken drumsticks
Preheat oven to 400 degrees. Remove chicken from the fridge while the oven preheats.
Line a large, rimmed baking sheet with nonstick foil. Spray lightly with nonstick cooking spray. Add chicken, skin side down, and brush with reserved marinade. Discard marinade from bowl or Ziploc bag.
Nonstick cooking spray
Bake chicken in 400 degree oven for 20 minutes. Flip chicken over and bake for an additional 20 minutes or until internal temperature has reached at least 165 degrees.
Switch oven to broil and broil chicken for 2-3 minutes. Remove from oven and serve.