Cook chorizo in a medium-sized skillet over medium heat, about 7-10 minutes. Remove chorizo with a slotted spoon and set aside, leaving grease in skillet.
Cook tortillas, one at a time, in skillet until slightly crispy and lightly browned.
Top each tortilla with ¼ of the chorizo then ¼ of the shredded chicken. Add toppings as desired.