Nature's Variety makes a limited ingredient dog food:
Nature's Variety Instinct Grain-Free Limited Ingredient Diet Duck Meal Dog Food at PETCO
I use their Instinct kibble with raw boost (has some freeze dried raw in it and grain-free):
Nature's Variety Instinct Rawboost Grain-Free Chicken Meal Formula Dry Dog Food at PETCO
I also use their frozen raw, which is available at Petco. Very little work involved, it comes in little medallions and you just have to remember to let it thaw. It also comes in little tiny pellets that can be poured out like kibble, but I haven't tried that yet.
All of these come in a variety of protein sources.