Place cookie sheet on oven rack. Heat oven to 375°F. Remove crust from freezer; let stand 1 minute. Prick crust with fork. Bake on cookie sheet 9 to 11 minutes or until very light golden brown.
Sprinkle bacon, green onions, tomatoes, salt and pepper in crust. In medium bowl, stir together half-and-half, flour and eggs. Stir in cheeses. Pour over tomato mixture.
Bake on cookie sheet 25 to 30 minutes longer or until knife inserted in center comes out clean. Let stand 10 minutes before serving.