1. Preheat oven to 400°. Unroll piecrust on a lightly floured surface; roll into a 14- x 12-inch rectangle.
2. Stir together soup and next 6 ingredients in a medium bowl. Pour into a lightly greased 11- x 7-inch baking dish. Top with piecrust; fold edges under, and crimp. Cut slits in top for steam to escape.
3. Bake at 400° for 45 minutes or until golden and bubbly. Let stand 10 minutes before serving.
*2 (12.5-oz.) cans chicken, drained, may be substituted.
Note: To make ahead, prepare recipe as directed through Step 2. Cover tightly with aluminum foil, and freeze up to 1 month. Preheat oven to 400°. Remove pie from freezer, and let stand at room temperature 30 minutes. Loosen foil, and place pie on a foil-lined baking sheet. Bake, covered, for 1 hour and 30 minutes. Uncover and bake 15 to 20 minutes or until golden and bubbly.
Mushroom-Bacon Chicken Pie: Cook 5 bacon slices in a large skillet over medium heat 5 minutes on each side or until crisp. Remove bacon slices, reserving drippings in skillet. Crumble bacon. Sauté 1 (8-oz.) package sliced fresh mushrooms in hot drippings 10 minutes or until tender. Add 2 minced garlic cloves, and sauté 1 minute. Prepare recipe as directed, stirring mushroom mixture and crumbled bacon into chicken mixture.