Add noodles to pot of boiling water. Cook according to package directions. Drain, rinse, and set aside.
Sauce
In bowl, whisk together peanut butter, lime juice, fish sauce, rice vinegar, liquid aminos, water and chili flakes.
Stir Fry
Over medium heat, place half of sauce in wok or large frying pan. Add in order green onions (cook 3 or so minutes), carrots, tofu, red peppers, and broccoli. Cook 7 or so minutes until vegetables are cooked but still crisp. Add noodles, tofu or cooked chicken, and bean sprouts--cook until hot. Add more sauce, if desired. Serve with peanuts, cilantro and lime wedges.