Dice chicken breast and place in a ziploc bag with the ½ cup marinade. Refrigerate for at least 2 hours and up to 24 hours.
Preheat oven to 400 degrees F.
Grease a 15″ pizza pan or large baking sheet. Roll out pizza dough to fit pan, and place on the pan. Bake at 400 degrees F for 10 minutes.
Meanwhile, cook chicken in a medium pan over medium-high heat for 6-8 minutes, until fully cooked (I always make sure by cutting open some of the biggest pieces)
Combine barbecue sauce and 2 tablespoon marinade. Spread over dough.
Sprinkle with cheese, pepper, pineapple, bacon, and chicken.
Return to the oven and bake another 10 minutes. Broil for 1-2 minutes to brown the crust and the cheese if desired.