In a cast iron pan, heat up 2 cups of olive oil or avocado oil.
To check if the oil is hot enough, place the tip of the corn tortilla into the oil. If they oil bubbles, then you know that the oil is hot enough.
Place the tortilla in the oil, and using a tongs, submerge the entire tortilla into the oil.
Once the tortilla has bubbled up and become golden brown on the bottom, flip the tortilla over and fold it in half using your tongs, about 30-60 seconds.
Once the tortilla is golden on one side, flip it over to the opposite side and fry until it is golden brown, about 30-60 seconds per side.
Lay the shells on a wire baking rack fitted with paper towels to absorb the excess oil.
Finally, add shredded chicken, sharp white cheddar cheese, salsa, avocado, and any other toppings you like to your tacos.