Preheat your oven to 375°F (190°C). In a grill pan, heat a little olive oil over medium-high heat. Grill the sliced zucchini in the pan for about 2-3 minutes on each side, until they develop grill marks and become tender. Remove from heat.
Grill the sliced mushrooms in the pan for about 3-4 minutes, until they are cooked through and slightly browned. Remove from heat.
Place the whole wheat pita bread or crust on a baking sheet or pizza stone.
Spread a thin layer of tomato sauce evenly over each pita bread.
Sprinkle a generous amount of shredded cheese over the tomato sauce, covering the entire surface.
Add the grilled zucchini, grilled mushrooms, sliced black olives, roasted red pepper strips, and sliced onion evenly over the cheese. Drizzle olive oil over the top of each pizza. Season with a pinch of freshly ground black pepper.
Place the baking sheet or pizza stone in the preheated oven and bake for about 10-12 minutes, or until the cheese is melted and bubbly and the edges of the pita are crispy. Remove the pizza from the oven and let it cool for a few minutes.
Sprinkle the torn or chopped fresh basil leaves over the top of your pizza.
Slice the veggie pizza into wedges and serve it warm.
Notes
Please note that the nutrition data given here is a ballpark figure. Exact data is not possible.