In a large pot of boiling salted water, cook the stir-fry noodles according to package instructions. Drain and set aside.
Season the sliced chicken breasts with salt and pepper.
In a large skillet or wok, heat olive oil over medium-high heat. Add the chicken and stir-fry for about 5-7 minutes or until cooked through and no longer pink. Remove chicken from the skillet and set aside.
In the same skillet, add sesame oil. Toss in the minced ginger and garlic, sautéing for about 30 seconds until fragrant. Add the sliced bell pepper and broccoli florets. Stir-fry for another 3-4 minutes until the veggies are tender but crisp.
Return the cooked chicken to the skillet. Add the cooked noodles, teriyaki sauce, and soy sauce. Gently toss everything together over medium heat for 2-3 minutes, allowing all the flavors to meld together.
Remove from heat and mix in chopped green onions. Adjust seasoning with salt and pepper if needed.
Serve in bowls topped with sesame seeds for a decorative finish.