First, make the dough. I like to mix together the flour and salt with a whisk, then I whisk together the yogurt and olive oil in a smaller bowl. Finally, I stir the wet and dry ingredients together with a spoon. You might need to add a little water to get a workable dough, but take it slow - you can always add more water in, but you can't take any water out.
Combine the sauce ingredients in a small saucepan and bring to a simmer over medium-high heat. Turn the heat down to low and continue to simmer for 10 minutes or so.
Preheat the oven to 450 °F . Line a baking sheet with aluminum foil and give it a spray of nonstick.
Form the dough into 4 s-sized balls. On a lightly floured surface, flatten each ball and roll it flat with a rolling pin.
Arrange the 4 pizzas on the prepared baking sheet. Top each pizza with ¼ of the tomato sauce, 1 ounce of shredded mozzarella and various toppings (I used bell peppers, soy crumbles and basil because that's what I had. Turkey pepperoni is especially good on pizza, too.)
Bake the pizzas for about 12-15 minutes, or until the cheese bubbles and the crust starts turning lightly golden-brown.