For the chicken: Preheat the oven to 375 degrees F. Rinse and pat dry the drumsticks. Mix the oil, chili powder, garlic powder, and some salt and pepper in a medium bowl or resealable plastic bag. Toss the drumsticks in the seasoned oil to coat well. Bake the drumsticks on a wire rack placed on a baking sheet (so air circulates around chicken) until very tender and the skin is crisp, 50 minutes.
For the spicy sauce: Mix together the butter, hot sauce and BBQ sauce in a large bowl.
Toss the drumsticks in the spicy sauce until well coated. Place the drumsticks back on the rack and continue baking an additional 10 to 15 minutes.