Chop the chicken breasts into bite sized pieces. Pour half of the marinade over the chicken and the reserve the other half. Cover or store in a ziploc bag and refrigerate for the chicken for at least 30 minutes or overnight.
Move the chicken over to one side of the pan and arrange the diced vegetables onto the baking sheet. Pour any remaining marinade over the vegetables and bake in the oven for another 10-12 minutes, or until the chicken is cooked through and the vegetables are soft and slightly roasted. Serve with fresh cilantro.