Ugh, I know just what you mean. I've been feeling like poo lately with my lupus acting up. Seems I always crave comfort foods, too, which for me means carbs, carbs, carbs, and fried foods!
However, a while back, I created a 'flare kit'. I included healthy, 'comfort' foods (jerky and cheese, canned fruits that I really enjoy, soups that feel indulgent, some of my favorite tea, etc.) and a good book or magazine for if I feel up to it, some cozy special socks, etc. It may not all be 100% what I would normally eat, but it's close enough on both sides that I feel good about eating it, and it gives me that comfort feeling I'm looking for.
I hope you're feeling more yourself soon.