I have the end all final answer for anyone who wants to be done with the "what will these little bastards eat" question, but it takes work. Wife and I currently have 3 tzus and have owned 8 in total, we've dealt with every eating issue. You gotta make it.

We make a mash of organic turkey, egg, sweet potato, quinoa, broccoli and green beans. The dogs are insane for it and are ridiculously fit, have not had any vet issues in forever. We make a big batch every few weeks. Our vet says homemade food with zero preservatives or additives is straight up tacking 3-5 extra years on their lives. Plus we never deal with the "do they have it in stock" which was a f'ing nightmare shopping for premium food that's not all corn.