We love this Chicken Chili Verde recipe.
http://www.epicurious.com/recipes/food/views/Chicken-Chili-Verde-3012#ixzz0qqvt363P
Definitely use chicken thighs (I tried substituting chicken breast to be healthier, but the flavor was significantly weaker). I shred the chicken with 2 forks instead of cubing it. And I use poblano peppers instead of green peppers. Last, I serve the cilantro on the side because some people think that cilantro tastes like soap (it's genetic, really!).
To avoid that "creamy" casserole style, avoid recipes that use cream of anything soups, large amounts of flour or starch (like cubed potatoes) or cream. All of those are designed to increase the creamy style sauce.