Stir together the paprika, cumin, and salt in a small bowl.
Place the chicken legs in a large freezer bag and add the spice mixture. Shake the bag to coat the chicken legs in the seasoning.
Add the minced garlic and one cup of the BBQ sauce to the bag. Squeeze the bag to combine the ingredients and coat the drumsticks in sauce.
Remove excess air and seal.
Pour the remaining BBQ sauce into a medium freezer bag. Staple the bag to the large bag above the seal. Freeze.
Cooking instructions:
Thaw.
Place the chicken in the slow cooker and cook on low for 4-6 hours.
When the chicken is cooked through, transfer the chicken to a foil-lined baking sheet. Brush the chicken with half the reserved BBQ sauce.
Place the chicken under the broiler for one to five minutes, until the sauce starts to brown.
Remove the pan from the oven and flip the drumsticks over. Brush with remaining sauce and return the pan to the oven to broil an additional one to five minutes.