Combine McCORMICK Slow Cookers recipe base with tomato paste and stir. Coat the chicken in the tomato paste mix.
Place one piece of chicken in the middle of the foil and top with onion and roasted capsicum. Fold and seal in a tight bundle. Repeat this with the rest of the parcels and place in the slow cooker insert pot.
Cover and cook for 2 hours on HIGH. (Keep covered during cooking. Cooking times may vary between Slow Cooker models).