Meanwhile, heat oil in a large non-stick skillet over medium high heat. Add chicken and cook until browned on all sides (5-6 minutes). Add the bell pepper, carrots, and garlic and stir fry for 2 more minutes. Take the pan off the heat and mix in the sauce, noodles, green onion, and peanuts. Add some of the pasta water as needed if noodles seem dry. Garnish with cilantro and sesame seeds. Serve.