In a medium-large bowl, combine flour, salt, and instant yeast. Stir well. Add the warm water. Using a Danish Whisk, sturdy wooden spoon or a rubber spatula, mix until all of the flour is incorporated. Cover the bowl with a plastic wrap and put it in a warm place to rise for 45-60 minutes. The dough should double in size.
While the dough is baking, combine all the veggies and olives in a bowl and drizzle with 2 tablespoon of olive oil. Add 1 teaspoon of garlic salt and gently stir to coat all of the veggies with oil.
When dough is pale golden brown, remove the pan from the oven. Top the crust with the shredded cheese and top with the oiled veggies. Return to the oven for another 12-15 minutes or until the crust is golden brown and cheese is starting to bubble.