Cut the corn tortillas into quarters.
Heat the vegetable oil in a skillet over medium heat.
Fry the tortilla pieces until golden brown and crispy.
Remove the tortillas and place them on paper towels to drain excess oil.
Pour the red salsa into the skillet and heat until bubbling.
Add the crispy tortillas to the skillet and mix well to coat.
If using, add shredded chicken for additional flavor.
Cook for about 2-3 minutes until the tortillas soften slightly.
Transfer to a serving dish and top with queso fresco.
Garnish with sour cream, avocado slices, diced onions, and cilantro.