Boil chicken. Strip into pieces.
Fry up corn tortillas (only until soft.. not like chips!).
Take some sour cream (the medium size.. I don't know how many ounces) , some chicken broth (small can), some jalapeno peppers (real or can. real better) and mix up.
Put chicken in tortillas (folded up) and place them side by side in a big glass pan.
Pour the sour cream mixture on top.
Put tons of mozarella on top.
Bake for a bit (until cheese is very melted).