Preheat oven to 425. Sprinkle pizza stone with corn meal. Spread out the pizza dough onto the pizza stone. Evenly coat the dough with the BBQ sauce and then cheddar cheese. Sprinkle on the rest of the ingredients. Bake for 15 - 20 minutes or until everything looks bubbly and cooked. Remove from oven and sprinkle with chopped cilantro and drizzle with Ranch dressing.