Preheat the oven to 220°C.
Halve the cherry tomatoes, slice finely the red onion and slice the zucchini and mushrooms.
Sear the vegetables on the grill.
Roll out the pizza dough on a floured work surface into 4 discs 25cm to 30cm in diameter.
Spread the tomato sauce on the pizza dough and arrange the grilled vegetables, peppers in oil and black olives.
Sprinkle the Mozzarella shredded 40% MG/ES, drizzle with peppers' oil and bake for 15 min.
Sprinkle the pizza with spinach leaves before serving.