Preheat oven to 450°F. Spread cauliflower on a baking sheet; toss with olive oil, salt, and pepper. Bake for 20 minutes, tossing once halfway through.
Combine soy sauce, sesame oil, fish sauce, garlic, shallots, and ginger in a small bowl.
Roll dough into a rectangle or oval on a large piece of parchment paper; pierce well with a fork. Brush soy sauce mixture over dough. Place dough (on paper) on baking sheet. Bake at 450°F for 7 minutes.
Spread roasted cauliflower and cheese over par-baked crust. Bake at 450°F for another 7 to 9 minutes, until cheese is melted and crust is golden-brown. Top with cilantro and green onion.
Combine yogurt, lime juice, sriracha sauce, and sugar in a small bowl; stir with a whisk. Drizzle over pizza.