1 Large Sweet -OR- Red Onion - thick sliced -OR- cut into 'eighths'
1 Large Green Bell Pepper - seeded and quartered
1 Large Red Bell Pepper - seeded and quartered
2-4 Cremini Mushrooms per person - cleaned
Preparation:
Cut chicken breasts into apx 1 inch cubes
Whisk together all remaining 'Kabob' ingredients and transfer to a large, zip-top bag
Add chicken and 'massage until well coated - Squeeze out as much air as possible and seal the bag - Transfer to refrigerator and allow to marinate for a minimum of 30 minutes (DO NOT exceed 2 hours)
While chicken is marinating, soak skewers (if using wood), prep vegetables, and heat grill (covered) to medium heat (375ºF)
A few minutes before grilling, transfer chicken AND marinade to a large bowl - thread chicken pieces onto skewers (5-7 pieces to a skewer) and set aside - DO NOT DISCARD MARINADE
Lightly brush grill with canola oil - Add vegetables to remaining marinade and transfer 'cut side down' to grill (use one side of the grill to allow room for cooking kabobs) - Cover with an aluminum baking pan and allow to cook until tender (baste with additional marinade once when turning) - Onions will take 5-7 minutes to a side, Tomatoes and Bell Peppers will take 4-5 minutes to a side, and Mushrooms will take 4-5 minutes to a side
Grill chicken kabobs over medium heat until juices run clear and they develop a 'nice char' (apx 4-5 minutes to a side) - Baste with remaining marinade as desired (allow to cook for a minimum 3 minutes after last basting)
Once each ingredient is cooked, remove from heat and plate
Serve with warmed pita bread, hummus, and rice if desired