In a medium bowl, combine the diced chicken, half of the sesame oil, soy sauce, honey (or maple syrup), rice vinegar, minced garlic, and grated ginger. Mix well to coat the chicken. Marinate for at least 15 minutes.
Heat a large skillet or wok over medium-high heat. Add the remaining sesame oil and the marinated chicken (reserve the marinade). Cook for about 5-7 minutes or until the chicken is browned and fully cooked, stirring occasionally. Season with salt and pepper to taste.
Add the broccoli florets and sliced bell pepper to the skillet. Pour in the reserved marinade and stir until the vegetables are tender-crisp, about 3-4 minutes.
Serve the chicken and vegetable mixture over a bed of cooked brown rice or quinoa.
Garnish with sliced green onions and sprinkle sesame seeds on top.
Notes
Marinate the chicken for more flavor. You can substitute quinoa with brown rice.