First, in a large but shallow pan, heat the 2 cups of oil until very hot. While it’s heating, cut the tortillas into 1 inch squares and set up a pan lined with paper towel beside the pan with oil. Once the oil is hot, add in a handful or two of the tortillas, don’t crowd the pan. Cook and flip with tongs until they’re golden and crispy, about 5-8 minutes.
Salt the freshly cooked tortilla chips as soon as they come out of the oil. Repeat until all the chips are cooked.
Next, in a cast iron skillet, use a few tablespoons of the oil and cook the onions over medium heat until they’re translucent, so about 5-7 minutes.
Then, beat the eggs and add to the pan with onions, cook over medium-low heat and when the eggs are halfway done, add in the chips. Keep stirring until the chips are all covered in the eggs, about 1 minute.
When the eggs are about 80% done, add in the whole pack of red enchilada sauce. Cook, stirring constantly until everything is coated red, about 1 minute. Dish out onto two plates.
Top with the crumbled feta, cilantro, jalapeños, and eat with avocado or crema.