Preheat your oven to 425°F (220°C). Line a baking sheet with foil and lightly coat it with cooking spray.
If using corn tortillas, work with a few at a time. Wrap them in damp paper towels and microwave for 20-30 seconds to make them pliable enough to roll without cracking. Flour tortillas straight from the fridge can also be warmed in the microwave for easier rolling.
Place 2-3 tablespoons of the chicken mixture on the lower third of each tortilla, keeping the filling about 1 inch from the edges. Roll up each tortilla tightly and place seam-side down on the prepared baking sheet. Ensure the taquitos are spaced apart to avoid touching.
Lightly spray the taquitos with cooking spray or brush them with olive oil. Sprinkle a pinch of kosher salt over the top.
Bake in the preheated oven for 15-20 minutes or until the taquitos are crisp and the ends are golden brown. Allow them to cool slightly before serving. Enjoy them with a side of sour cream or Creamy Lime-Cilantro Ranch.