Cheesy BBQ Chicken Pizza Rolls

fresh, frozen or refrigerated pizza dough, thawed

sweet BBQ sauce, (plus extra for serving)

shredded part-skim mozzarella cheese, (divided)

finely chopped cooked chicken ((rotisserie, poached, etc))

finely chopped red onion

crushed red pepper flakes, (optional)

slices bacon, (cooked crisp, drained and finely chopped (optional))

chopped fresh parsley leaves for garnish

vegetable oil for greasing the pan, (plus more for oiling the bowl)