Poach/Boil 2-3 boneless chicken breasts - then set aside until cooled.
Dice onion and garlic.
Put olive oil in pan along with onion and garlic. Cook on low in sauce pan until onion starts to become translucent (do not overcook).
Shred chicken with two forks (or with fingers) and place in sauce pan (with onion and garlic).
Add BBQ Sauce slowly. Coat the chicken until fully coated (the chicken will soak up alot of the sause, so don't be shy). Bring to a simmer - add salt and pepper to taste.
Place chicken on top of pizza. Add mozzarella cheese (as much as desired).
Bake pizza as directed on package. Also is AWESOME cooked on the grill!!! Consider having cole-slaw as your side dish!!