Preheat the oven to 350 degrees F (175 degrees C).
Combine chicken and taco seasoning in a large skillet over medium heat; cook and stir until chicken is no longer pink, about 5 minutes. Add 1 1/2 packages cheese and 3/4 jar salsa. Mix thoroughly and set aside to cool.
Spread 1/2 jar salsa in a 9x13-inch baking dish. Cover salsa with 6 corn tortillas. Spoon refried beans on top. Cover beans with 1/2 package cheese. Add a layer of 6 corn tortillas. Spread chicken mixture evenly on top. Add the last 6 corn tortillas. Spread 1 jar salsa on top. Sprinkle remaining 2 packages cheese on top.
Bake in the preheated oven until cheese is melted and filling is hot and bubbly, 30 to 45 minutes.
