my co-worker spends one day a week preparing her dog's food for the week...just like you said..chicken, rice, carrots....etc. (organic, btw)...like he said...^ the dogs eat better than some people. As long as hes not getting sick, im sure its fine..hope it works well for now though, what you gonna do when he gets tired of that?..haha
but for reals, when a dog is hungry enough, they will eat. good luck