1. Place marinade ingredients into a large mixing bowl; stir to combine. Add chicken and toss to coat. Add vegetables and mix until fully coated. (You can use a large ziplock bag, if desired.) Allow to marinate for 20–30 minutes.
2. Cut five large squares each of aluminum foil and Gefen Parchment Paper, placing each square of parchment over a square of foil. Divide chicken and vegetable mixture evenly among the squares.
3. Working with one portion at a time, pull up the sides of the parchment paper and fold to form an envelope, making sure to cover and fold tightly. Pull up foil sides and fold over, ensuring that the packet is fully sealed.
4. Place directly onto a hot grill for 10 minutes per side. Remove from grill and allow to rest for 10 minutes before serving.