Start by chopping your bell peppers, carrots, and green onions into bite-sized pieces. Bring a large pot of water to a boil, then add the lo mein noodles and cook according to the package instructions until al dente, about 4-6 minutes. Once cooked, drain and rinse under cold water to stop the cooking process.

In a large skillet or wok, heat 2 tablespoons of vegetable oil over medium-high heat. Add the boneless chicken breasts and sauté for about 6-8 minutes until golden brown and fully cooked. Remove the chicken from the skillet and set aside.

In the same skillet, add more oil if needed and toss in the bell peppers and carrots. Stir-fry over medium-high heat for 3-4 minutes until vibrant and tender. Then add the green onions and cook for another minute.

Return the cooked chicken to the skillet with the vegetables, then add the lo mein noodles. Drizzle in the soy sauce, sesame oil, and minced garlic, tossing everything together. Stir-fry for 2-3 minutes until well coated and heated through.

Plate the Chicken Lo Mein in bowls. Optionally drizzle extra soy sauce on top and serve hot.