Heat oven to 350°F. Place pie crust in 9-inch glass pie plate as directed on box for One-Crust Filled Pie.
In medium bowl, mix half-and-half, eggs, salt and pepper; set aside. Layer bacon, cheeses and onion in crust-lined plate. Pour egg mixture over top.
Bake 40 to 50 minutes or until knife inserted in center comes out clean. Let stand 5 minutes; cut into wedges.