Remove the skin from the drumsticks
Make the rub. Combine all of the ingredients in a large bowl and mix well.
Toss the chicken legs in the rub until well coated.
Preheat the oven to 325 degrees F.
Spray a 9 X 13-inch baking pan with a non-stick cooking spray.
Place the drumstick in a single layer. Cover with aluminum foils and place in the preheated oven. Bake for 1 hour.
While the chicken is baking make the BBQ sauce. combine the ketchup, mustard, Worcestershire sauce, and brown sugar together and mix well. Set aside.
Once the chicken has baked for an hour remove it from the oven. Reduce the heat of the oven to 300 degrees F.
Remove the chicken from the baking dish and remove any liquid that is in the dish.
Spread enough of the BBQ sauce to cover the bottom of the dish. Place the chicken back in the dish. Pour the remaining BBQ sauce over top of the chicken
Cover with the aluminum foil and place back in the oven and bake another hour.