Cook the noodles according to package instructions. Drain and set aside.

In a wok, heat a tablespoon of oil over medium-high heat. Add the bell peppers, carrots, and broccoli. Stir-fry for about 5-7 minutes until tender.

Add the cooked noodles to the wok with the vegetables. Pour in the soy sauce, Sriracha, sesame oil, and rice vinegar. Toss everything together until well combined and heated through.

Garnish with chopped green onions and sesame seeds before serving.