Cook the lo mein noodles according to package instructions until al dente. Drain and set aside.
Season the sliced chicken with salt and pepper. Heat 1 tablespoon of vegetable oil in a large wok or skillet over medium-high heat. Add the chicken and cook until no longer pink, about 5-6 minutes. Remove and set aside.
In the same pan, add the remaining 1 tablespoon of oil. Stir in garlic and ginger, cooking for 30 seconds until fragrant.
Add onion, red bell pepper, and carrots. Stir-fry for 4-5 minutes until vegetables are tender-crisp.
Return the cooked chicken to the pan. Add the cooked noodles, soy sauce, oyster sauce, hoisin sauce, sesame oil, and sugar. Toss everything together until well combined and heated through.
Garnish with chopped green onions and serve immediately.
Notes
Serve hot and enjoy this comforting noodle dish as a main course.