I've been making this dish lately. It's quite tasty:
Pan fry one flour tortilla with olive oil so that it crisps golden brown, cut it into quarters, throw some shredded cheese on there, a bit of green chile, shredded chicken. Throw it in the oven (or broiler) to melt the cheese. Top with some lettuce and tomato. Serve with sour cream, optionally guacamole (I'm allergic to avocado so I forgo this), and some salsa.