Preparation:

Step1: Marinate the Chicken

1. In a bowl, combine soy sauce, cornstarch, and sesame oil.
2. Add the sliced chicken and mix until coated. Let it marinate for 10-15 minutes while you prepare other ingredients.

Step2: Prepare the Sauce

1. In a small bowl, whisk together soy sauce, oyster sauce, hoisin sauce, sugar, sesame oil, chicken broth, and cornstarch (if using). Set aside.

Step3: Cook the Noodles

1. Bring a pot of water to a boil and cook the lo mein noodles according to package instructions.
2. Drain the noodles, rinse with cold water to stop the cooking process, and toss with a teaspoon of oil to prevent sticking.

Step4: Stir-Fry the Chicken

1. Heat 1 tablespoon of vegetable oil in a large wok or skillet over medium-high heat.
2. Add the marinated chicken and stir-fry for 4-5 minutes until fully cooked. Remove from the wok and set aside.

Step5: Stir-Fry the Vegetables

1. Add the remaining tablespoon of oil to the wok.
2. Stir-fry garlic and ginger until fragrant, about 30 seconds.
3. Add carrots, bell peppers, and snap peas. Stir-fry for 3-4 minutes until the vegetables are slightly tender but still crisp.

Step6: Combine Everything

1. Return the cooked chicken to the wok with the vegetables.
2. Pour in the prepared sauce and stir well to coat everything evenly.
3. Add the cooked noodles to the wok, tossing until fully combined and heated through.

Step7: Garnish and Serve

1. Sprinkle chopped green onions and sesame seeds on top before serving.