Preheat the oven to 425F. Cut the flatbread in half so that you have 4 squares total. Place a wire cooling rack on a sheet pan and set aside.
Heat a large skillet over medium heat. Drizzle with oil. Once hot, add the vegetables. Sauté for 5 minutes, or until the veggies start to soften. Sprinkle with salt, drizzle with balsamic, and remove from the heat.
Meanwhile, add a few scoops of marinara sauce to each square of flatbread. Use a spoon to spread the marinara to the edges of the pizza, adding more marinara as desired.
Transfer the flatbreads to the sheet pan fitted with the wire rack. It's okay if they hang over the edges a bit. Top each flatbread with a sprinkle of veggies, then a sprinkle of cheese, then some more veggies.
Bake at 425F for 10-15 minutes. I typically bake for 15 minutes, which yields very golden almost burned cheese and almost blackened, cracker-crisp flatbread edges.
Optionally, serve with dollops of pesto on top. Enjoy!
Video
Notes
I usually end up with some extra vegetables when I make these pizzas. Leftover sautéed veggies can be stored for 3-4 days in the fridge and added to pasta (like this One Pot Spaghetti) or scrambled eggs.
These pizzas reheat well in the air fryer. Reheat at 375F for just 3-5 minutes, the cheese will melt nicely and the crust will re-crisp.
The nutrition calculations are an estimation and will vary based on ingredients used. They were calculated using roughly 1 cup of marinara sauce.