Preheat oven to 350°F (175°C).

Coat casserole dish with butter or olive oil.

Place chicken breasts in dish, sprinkle a pinch of black pepper/salt over the top and cook uncovered for 45 minutes or until chicken is cooked through.

Remove chicken from oven and let cool.

Mix all other in ingredients in large bowl.

Once chicken has cooled, roughly chop and combine with all other ingredients.