- In a medium bowl, toss the chicken pieces with cornstarch until evenly coated. 
- Heat vegetable oil in a large skillet or wok over medium-high heat. Add the chicken and cook for about 5-7 minutes, stirring frequently, until browned and cooked through. Remove the chicken from the skillet and set aside. 
- In the same skillet, add broccoli, bell pepper, and snap peas. Stir-fry for about 3-4 minutes until the vegetables are tender-crisp. 
- Add garlic and ginger to the skillet and cook for an additional 1 minute, stirring constantly. 
- In a small bowl, whisk together soy sauce, honey, sesame oil, and rice vinegar. Pour this sauce over the vegetables in the skillet. 
- Return the cooked chicken to the skillet and toss everything together until well coated and heated through, about 2 minutes. 
- Sprinkle sesame seeds over the stir-fry before serving. Serve hot over cooked rice.