Brown meat; drain. Stir in tomato sauce and taco seasoning mix; simmer 5 minutes.
Unroll dough; press onto bottom and sides of ungreased 12-inch pizza pan. Prick bottom and sides with fork. Bake at 375° F for 10 to 12 minutes or until golden brown.
Cover crust with meat mixture; top with cheese. Continue baking until cheese begins to melt. Top with remaining ingredients.
Serve with sour cream.Servings: 4 to 6