Preheat oven to 500ºF. In a small bowl, combine pizza sauce with chipotle purée. Spread sauce mixture evenly on two pizza dough. Add BBQ sauce and spread evenly as well. Place 1 cup meat on each pizza, dispersed evenly.
Add slices of poblano and white onions. Divide cheese onto two pies. Transfer to the preheated oven and bake for 13 to 15 minutes or until crust is golden and cheeses are melted.
Remove from the heat and let it sit 10 minutes before serving.