I have given up on the food fight. I just won't play that game any more.
I feed a super premium dry food Canidae (I have tried others, long list) but keep coming back tothe Canidae. To encourage the kids to eat I add to the dry kibble a tablespoon or LESS or so of a high quality canned food. I always squish the canned food up with my fingers so that my dogs have my scent on their food and are reminded what a good pack leader I am.
That idea is straight from my Cesar's Way book!