Foil Packet Chicken

2 lbs b/s chicken breast, divided 6 ways
6 Potatoes, sliced thin
1 medium onion, sliced
3 bell peppers (green, yellow, red), sliced
OR
1 bag frozen onion and pepper mix

Marinade:
1/2 cup water
1/2 vegetable oil
1/2 apple cider vinegar
3 T. Weber Kickn' Chicken Grill Creations Spice Mix (or any similar product)

Combine marinade ingredients with chicken and allow to sit for at least 30 minutes. In the meantime, layout 6 pieces of heavy duty foil. Evenly divide potatoes, peppers, and onions on each piece of foil. Place 1 piece of chicken on each piece of foil and pour 1/4 cup of marinade over each piece. Roll and pinch edges of foil to create a pouch. Bake in a preheated 350* oven for 45 minutes.