Preheat the oven to 350 degrees. Spray a 9x12-inch baking dish with cooking spray.
Place the beef in a non-stick skillet, season with salt, cumin, chili powder, and pepper. Cook over medium-high heat until browned. Drain off any fat. Add the salsa, beans, corn, and half the olives. Stir and continue to cook for 2 minutes or until everything is heated through.
Stir together the cottage cheese and sour cream.
Place the chips in a large food storage bag and crush.
Put half the beef mixture in an even layer in the bottom of the prepared baking dish. Top with half the cottage cheese sour cream mixture, then 2 cups of grated cheese, and half the crushed chips. Repeat the layers. Cover with foil and bake for 30 minutes. Leave oven on.
Remove the foil, sprinkle the remaining 2 cups of cheese over the top, scatter the rest of the olives, the tomatoes, and the jalapeño slices over the top. Cook for another 5-10 minutes or until the cheese on top is fully melted. Scatter the green onion on top and serve.