On a lightly floured surface, roll the pie crust dough into a circle and transfer to a 9" pie plate. Trim pastry to within 1/2" of the rim of the plate and crimp edge.
Cover the pastry with a double thickness of foil and fill with pie weights or dried beans. Bake in a preheated 350-degree oven for 20-25 minutes or until bottom is lightly browned. Remove foil and weights; bake 5-10 minutes longer, or until light brown. Cool on a wire rack.
In a small bowl, mix sour cream, cheeses, green onions, and seasonings. Arrange one-third of the tomatoes in crust, spread with one-third of the sour cream mixture. Repeat layers twice. Bake for 25 minutes. Top with bacon; bake 5-10 minutes longer or until filling is bubbly. Let stand 10 minutes before serving.