Add the chicken, bell peppers, onions, and zucchini to a large bowl, or ziplock bag and pour the remaining sauce over the top. Seal the bag or bowl and place it in the refrigerator and allow the chicken and veggies to marinate for 1-4 hours. 1 pounds chicken breast, 1 red bell pepper, 1 green bell pepper, 1 red onion, 1 zucchini squash, 2 cups fresh pineapple
Soak wooden skewers in cold water for 30 minutes, or use metal skewers.
Preheat the grill to medium high heat, about 400 F.
Add the reserved sauce to a small sauce pan. In another small bowl, whisk together cornstarch and cold water to make a slurry. Slowly whisk the mixture into the sauce. 1/2 TBS cornstarch, 1 TBS cold water
Bring the sauce to boil over medium heat, stirring often until the mixture starts to thicken, about 1-3 minutes. Remove from the heat and let it cool slightly until needed.
Thread the chicken, vegetables, and pineapple, onto the prepared skewers, alternating them as you go.
Cook kebabs for about 10-15 minutes on the grill, rotating every few minutes, until cooked through, and chicken reaches 165 F internally.
Remove kabobs from the grill and brush with sticky teriyaki sauce.
Serve over cooked white or brown rice if desired, and top with green onions.