Take an oven safe frying pan and grease it with oil, put it on medium high heat. Add the chopped celery, carrot and onions to the pan and cook for five minutes, stir them often in between. Add the ham, jalapenos and cook for five more minutes on medium heat. The fries will be properly cooked by this time.
In a mixing bowl, whisk an egg and add the cheese, mix them together. Pour this egg mixture over the fries in the frying pan and let it sit on the hot pan until the egg starts to cook from the edges.
Turn on your oven at this point and set it to broiler settings. Put the frying pan inside the oven and let it broil until the top of the frittata has become solid and cooked through. Remove the frittata from the oven and put it on a plate. Serve it warm with ketchup or any favourite dip on the side.