Preheat oven to 425 degrees F and line a baking sheet with parchment paper.
Add sliced onions and garlic and season with olive oil, oregano, salt, and black pepper. Toss to fully coat and bake for 20-25 minutes or until golden brown.
Add roasted onions and garlic to a blender and add remaining sauce ingredients: lemon juice, nutritional yeast, filtered water, cashew butter, and a pinch of salt and pepper. Blend until smooth. Taste and add more salt and pepper as needed.
Preheat the oven to 550 degrees F or as hot as your oven gets.
Prepare pizza dough. Flour the surface and flour a rolling pin to roll the dough from the center to the edges until the circle is about half an inch thick. Once fully rolled out, place parchment paper on your pizza peel and gently pick up the dough, and lay it on top.
In a small bowl, toss the chickpeas with 1/3 cup of buffalo sauce until fully coated.
Add Roasted Onion and Garlic Sauce to the pizza evenly on top using the back of a spoon.
Add sliced tomatoes, and sprinkle the coated chickpeas evenly on top.
Gently slide pizza onto the pizza stone and bake for about 10-12 minutes or until the crust is golden brown.
Remove pizza from the oven, add desired toppings (arugula, spinach, green onions, and ranch dressing) on top, and cut into slices to serve immediately.