In a medium bowl whisk together all marinade ingredients. Add chicken, toss to combine, cover and chill for 30 minutes.
Skewer the chicken and veggies. Brush the veggies with oil and salt and pepper them to taste. Discard marinade.
Transfer skewers to a preheated and oiled grill. Rotate often and cook for 8-10 minutes until chicken is cooked through and veggies are tender.
Garnish with balsamic glaze and chopped herbs if desired. Serve immediately.