**Cook the noodles**
Bring a pot of water to a boil and cook the ramen noodles according to package instructions (usually 2–3 minutes). Drain and set aside.
**Prepare the sauce**
In a mixing bowl, whisk together soy sauce, oyster sauce (if using), honey, sesame oil, cornstarch slurry, minced garlic, ginger, and red pepper flakes. Set aside.
**Cook the chicken**
Heat 1 tablespoon of oil in a large skillet or wok over medium-high heat. Add the sliced chicken and cook for 4–5 minutes, stirring occasionally, until browned and fully cooked. Remove the chicken from the skillet and set aside.
**Stir fry the vegetables**
In the same skillet, heat the remaining oil. Add broccoli, bell peppers, and carrots, and stir fry for 3–4 minutes, or until the vegetables are tender-crisp.
**Combine everything**
Return the cooked chicken to the skillet, followed by the cooked ramen noodles. Pour the sauce over the mixture and toss everything together. Cook for 2–3 minutes, stirring frequently, until the sauce thickens and coats the noodles and chicken.
**Serve**
Divide the stir fry into bowls and garnish with sesame seeds or sliced green onions, if desired. Serve hot.