One of the most common allergies that dogs can have is to chicken, it can also cause 'hot spots' etc. This can also happen due to the quality of protiens.
If you've taken the dog to the vets to check for mites, dermatitis etc then I would suggest changing to a slightly better food (even tho its good). I think Innova changed the recipe but I can't remember.
It might be an idea to change to Taste of the Wild, alot of people have really good results with this food even with dogs with allergies and/or picky eaters. Orijen also just came out with a Red Meat recipe, and they have holistic with Orijen and Acana as well.
heres a couple good sites:
http://www.dogfoodanalysis.com/
http://dogfoodchat.com/
