Preheat the oven to 400 degrees F. Cut the cauliflower in a few smaller pieces. Process them in a blender for a few seconds until they are riced. Transfer into a medium size mixing bowl. Add flour, oregano, and salt. Beat eggs for about a minute and stir into the cauliflower mass. On a baking sheet lined with a parchment paper place the cauliflower “dough” and flatten it with your hands until the crust is about ⅓ of an inch. Pre-bake for about 25 minutes or until golden. Meanwhile, prepare the pizza topping. Remove the cauliflower crust from the oven. Cover it with tomato sauce and add broccoli, spiralized zucchini, and slices of pepper. Then put it back in the oven for 10-15 more minutes until the vegetables are ready. Take the pizza out of the oven. Lightly sprinkle hot pizza with nutritional yeast or cheese of your choice. Top with fresh spinach and pesto. Bon appétit!