Step 1: Cook the chow mein noodles according to package directions until al dente. Drain thoroughly and set aside.
Step 2: In a small bowl, whisk together the soy sauce, oyster sauce, hoisin sauce, cornstarch, sesame oil, ground ginger, black pepper, and water until completely smooth. This is your incredible chow mein sauce – set aside.
Step 3: Heat 1 tablespoon of vegetable oil in a large skillet or wok over medium-high heat. Add your thinly sliced chicken, season with salt and pepper, and cook for 5-7 minutes, or until golden brown and fully cooked. Remove chicken from the pan and set aside.
Step 4: Add the remaining tablespoon of vegetable oil to the same skillet. Add the minced garlic, sliced bell peppers, and shredded carrots. Stir-fry for 3-4 minutes until they are tender-crisp.
Step 5: Return the cooked chicken to the skillet. Add the bean sprouts and your cooked chow mein noodles. Pour the fantastic homemade chow mein sauce evenly over all the ingredients.
Step 6: Gently toss everything together, ensuring every noodle strand and piece of chicken and vegetable is coated in the savory sauce. Continue to stir-fry for an additional 2-3 minutes, allowing the sauce to heat through and thicken.
Step 7: Remove the skillet from the heat. Stir in the chopped green onions, giving it one last toss. Serve your piping hot Chicken Chow Mein immediately, garnished with extra green onions if desired.