Preheat your grill to medium-high heat.
Prepare the pizza dough and spread it out on a lightly greased baking sheet.
Add the zucchini, red pepper, and mushrooms to the dough and brush with olive oil.
Place the pizza on the preheated grill and cook for 8-10 minutes, flipping once.
To make the garlic-herb sauce, combine the olive oil, garlic, parsley, basil, oregano, salt, and pepper in a small bowl.
Once the pizza is done, brush with the garlic-herb sauce and enjoy!