No appetite? Here are two foods I know will keep you hungry and going for more food. Pancakes and onions. Not together thou. These two foods I find make me hungrier.

If I have pancakes in the morning, then I am hungry all day.

However, I go thru days of not eating much, and then bounce out of it, especially after pizza (maybe it is the cheese). It might be just a phase you are going thru, or maybe you just dont like to eat in the upstairs kitchen for some reason.

Try some canned juice like V8. You get the vitamins, and it may stimulate your appetite.

Restaurants too are good places to pull out of these phases.
Watching and smelling the foods - plus the great atmosphere of a little elegance may help.

Colors