Heat the oven to 200°C/390°F.
In a medium-sized bowl, grate and mix the two cheeses together.
7 ounces cheddar cheese, 7 ounces mozzarella
In a large mixing bowl, mix 1 cup of the enchilada sauce with the cream cheese, half of the mixed shredded cheese, and the shredded chicken together well.
2 cups red enchilada sauce, 12.5 ounces cream cheese, 1.7 pounds shredded chicken
Pour the chicken mixture into a 9x13" casserole dish.
Sprinkle the remaining cheese on top, pour the remaining enchilada sauce over the cheese, and then sprinkle with fresh diced chilies.
2 green chilies
Bake for 15-20 minutes, until the cheese melts and is a little bubbly on the edges.
Serve your chicken enchilada casserole with fresh cilantro, a squeeze of fresh lime, and a dollop of sour cream, in low-carb tortillas if desired.
squeeze of fresh lime juice, fresh cilantro