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Unroll crescent dough into a rectangle; press onto the bottom and 1 in. up the sides of a greased 13×9-in. baking dish. Seal seams and perforations. Sprinkle with 1 cup of chips; set aside.
In a large skillet, cook beef over medium heat until no longer pink; drain. Stir in tomato sauce and taco seasoning; bring to a boil. Reduce heat; simmer, uncovered, for 5 minutes. Spoon over chips. Top with sour cream, cheese and remaining chips.
Bake, uncovered, at 350° for 25-30 minutes or until crust is lightly browned.