BBQ Chicken Pizza

We haven't had the best track record with making pizza at home, but I thought I'd give it another try after finding this recipe in People. I'm glad I did. It was yummy.

3 (4 oz.) boneless, skinless chicken breasts
1/2 tsp ground pepper
1/8 tsp kosher salt
2 tsp brown sugar
1 tsp paprika
1 tsp garlic powder
1/2 tsp ground cumin
1 package refrigerated pizza dough (I used the Pillsbury classic)
2 tbsp cornmeal
1/3 cup ketchup (it called for no-sodium but I wasn't buying special ketchup just for this)
3 tbsp yellow mustard (I'd only use two next time)
1 tbsp white vinegar
1/2 cup sliced red onion
{1/4 cup pickled jalapeno slices - I didn't include these because I don't like them}
4 oz. fresh mozzarella cheese, thinly sliced
2 tbsp chopped cilantro leaves

1. Place a pizza stone or heavy baking sheet in oven. Preheat to 450 degrees.
2. Chop chicken into bite-size pieces. Sprinkle both sides of chicken with salt and pepper.
3.  Mix brown sugar, paprika, garlic powder and cumin together. Set aside 2 tsp. and rub the rest on the chicken.
4. Heat a grill pan over medium-high heat. Coat pan with cooking spray. Add chicken and saute three minutes on each side, or until chicken is done.
5. Roll dough into a 14x9 rectangle or 14" circle on a lightly floured surface. Pierce dough with fork. Lightly coat with cooking spray (we forgot this step).
6. Carefully remove pizza stone from oven. Sprinkle cornmeal on pizza stone and add dough.
7. Bake pizza for 9 minutes. While that's baking, combine reserved spice mixture, ketchup, mustard and vinegar in small sauce pan over medium heat. Bring to a simmer, and cook 3 minutes or until slightly thick, stirring occasionally.
8. Remove partially cooked crust from oven and spread ketchup mixture evenly around, leaving a 1/2 in border around the edges. Top with chicken, onions and cheese. Bake for another 8 to 10 minutes or until cheese is browned. Sprinkle with cilantro and serve.