Combine the chicken egg, parmesan cheese, and Italian seasoning in medium-sized bowl. Form the chicken mixture into a thin, circular crust shape on a parchment-lined baking sheet. Bake until golden, about 20 minutes.
Top chicken crust with toppings in the following order: spinach, sliced tomatoes, mozzarella, and then 1 cup of your favorite veggie toppings.
Bake until cheese is melted, about 7 to 10 minutes. Cut into 4 equally-sized slices, and serve.