Arrange broccoli florets evenly at the bottom of pie plate and top with cooked diced chicken.
In a saucepan, add condensed cream of chicken soup, milk, ½ cup of shredded cheddar cheese, dry parsley flake and pepper. Mix well over medium heat until cheese is melted. Remove from heat and pour over the chicken.
Sprinkle remaining cheese on top of sauce.
Combine breadcrumbs and melted butter and sprinkle evenly over cheese. Season with a pinch of salt and pepper.