Preheat oven to 450-500 degrees F.
Heat cast iron griddle or baking stone for twenty minutes.
Sprinkle pizza peel with corn meal (or use parchment paper and corn meal). The corn meal helps prevent dough from sticking.
Thinly slice brussels sprouts, holding onto the stems.
Saute brussels sprouts, garlic, shallots in 1 tablespoon olive oil, until wilted.
Put brussels sprouts mixture on dough.
Top with mozzarella cheese.
Top with bacon.
Bake for 8-10 minutes, on lowest rack of oven.