Combine flour, lukewarm water, yeast, salt, and oil in a bowl. Knead until the dough is smooth and does not stick to your hands (add more flour if needed). Place in a warm oven and let rise for at least 30 min.
While the dough rises, cook the minced meat in a pan over medium-high heat for 7-10 min, breaking it apart as it cooks, until browned and cooked through. Season with salt. Peel the onion and slice thinly. Slice the mozzarella. Cut the bacon into strips.
Preheat oven to 200°C (392°F). Place the dough on a baking sheet lined with baking paper and roll it out. Brush with barbecue sauce. Spread minced meat, onion slices, bacon strips, and mozzarella slices evenly on top.
Bake for 30 min until the cheese is melted and the crust is golden. Serve immediately.