Pat drumsticks dry. No need to rinse the chicken off. Just pat it dry so the rub will stick.
Add chicken to a slow cooker liner and sprinkle with BBQ rub, or all the seasonings listed in the reicpe to make your own rub. Twist the bag closed and toss to coat chicken.
Drizzle with BBQ sauce. Don’t worry about stirring it. The sauce will work it’s way down.
Add cooking liquid (apple juice, water, chicken broth, orange juice, etc).
Cook on low for 5-6 hours or on high for 3-4 hours.
When chicken has finished cooking in slow cooker, lower your oven rack about 12 inches from the broiler element. Preheat oven to to broil.
Line a baking sheet with aluminum foil or parchment paper. Spray with nonstick spray.
Remove chicken from slow cooker and place on a parchment paper-lined baking sheet. It's going to be falling apart, so just do the best you can to keep them in one piece. I like using tongs for this.
Generously baste with BBQ sauce.
Broil on high for about 2-3 minutes. Watch carefully so they don’t burn.
Flip the legs over and baste the other side, then broil for 2-3 minutes.