Grease a casserole dish with olive oil and add the chicken breasts. Optional: make three slits in each breast so the sauce soaks in.
Arrange all the chopped vegetables around the chicken.
In a separate bowl mix together the sauce cranberry balsamic sauce ingredients: olive oil, cranberry sauce, balsamic vinegar, salt and pepper.
Pour the cranberry balsamic sauce over the chicken and vegetables and drizzle with a little extra olive oil.
Bake for 45-50 minutes, or until chicken is done.