Add chopped garlic and onion (or use garlic and onion powder if you prefer).
Season well with salt and pepper.
Sprinkle carrots around the chicken.
Cover pan tightly with foil and place on grill.
Cook over medium heat until chicken is at least half way cooked through.
Add in all other veggies and mix well.
Cover tightly with foil again and put pan back on the grill.
Grill over medium heat until cooked through. Enjoy!
Notes
If you rather use your oven, bake at 350º for one hour before adding in all other veggies. Then bake an additional one hour, or until chicken and veggies are cooked through.