Heat oven to 350°F. Grease 12x8-inch (2-quart) baking dish. Cook broccoli as directed on package; drain.
Arrange broccoli in greased baking dish. Layer chicken over broccoli. In small bowl, combine soup, mayonnaise and lemon juice; mix well. Spread over chicken; sprinkle with cheese.
In small bowl, combine bread crumbs and margarine; sprinkle over top. Bake at 350°F. for 30 to 35 minutes or until thoroughly heated.