Preheat oven to 350°F. Cook and drain broccoli and put it in the bottom of a 9×13 pan.
Layer chicken pieces on top of the broccoli.
In a medium bowl combine soup, mayonnaise, lemon juice, and cheese and mix well. Spread over the chicken.
Add melted butter and bread crumbs to a Ziploc bag and mix well. Pour over the soup mixture. Pour the batter over the crust.
Bake for 35 minutes or until heated through.