Heat a tall sided frying pan to medium and add a couple of inches of oil. Let the oil heat up to 350ºF - you can use a candy thermometer to measure this.
Add the sliced tortillas to the pan without crowding them and cook on each side until they are just lightly golden then remove with tongs or a a spider strainer.
Place the freshly cooked tortillas chips on paper towel and season immediately with sea salt.