Toss the chicken in the spices, herbs, green chiles, and chicken broth inside a Crockpot or slow cooker.
Cook on high for 3-4 hours or low for 6-8 hours until the chicken shreds easily with forks.
Shred the chicken and set the Crockpot to its keep warm function.
Stack the tortillas and use a knife to cut them in half and 5-6 times across to create bite size strips. Add the tortilla strips and half the cheese to the chicken and fold everything together. (Optional: You can add ingredients like black beans, roasted corn, and fresh peppers to the casserole at this step.)
Top with the remaining cheese, cover, and cook for 15-20 minutes until the top layer of cheese is fully melted.
Garnish with cilantro and queso fresco before serving. I like to serve with rice, beans, and pickled onions or escabeche.