Preheat oven to 350°F (175°C).

Spray a 9x13-inch baking dish with nonstick cooking spray.

Boil pasta according to package directions for about 4-5 minutes, or until al dente.

Drain the pasta well.

Return the drained pasta to the pot.

Stir in chicken, cream of chicken soup, salsa, sour cream, 1 cup of cheese, and taco seasoning.

Mix well.

Pour the mixture into the prepared baking dish, spreading it evenly.

Sprinkle the remaining cheese on top.

Cover dish with nonstick aluminum foil and bake for about 25 minutes.

Remove foil and let rest for a few minutes before serving.