Prepare the french fries according to package instructions on a lined baking sheet in the oven. Then, adjust the temperature to 400 degrees Fahrenheit if needed.
Remove the fries from the oven and top with the shredded cheese. Return to the oven and bake for another 3-5 minutes or until the cheese is melted.
Remove the fries from the oven and top with diced tomatoes, pickled jalapeno slices, sliced black olives, chopped green onion, and crumbled cotija cheese.