Preheat oven to 400°. In a large skillet, cook beef over medium heat 8-10 minutes or until no longer pink, breaking into crumbles; drain. Stir in taco sauce, Worcestershire sauce, onion powder, paprika, garlic powder, 1/4 teaspoon salt and pepper. Add lemon juice and, if desired, olives., In an electric skillet, heat 1 in. of oil to 375°. Working in batches, fry potatoes 3-4 minutes or until golden brown, stirring occasionally. Remove with a slotted spoon; drain on paper towels. Sprinkle with remaining salt., Stir potatoes into meat mixture. Place 2/3 cup mixture in the center of each tortilla; top with 1/2 cup cheese. Fold bottom and sides of tortilla over filling and roll up., Wrap each burrito in foil; place on a baking sheet. Bake 15-18 minutes or until heated through.