I had a really bad episode of nausea and taste change during xeloda chemo. There were huge episodes before each meal . I would throw tantrums like a baby. My wife actually had to call my friend over to convince me to eat something.
Some of things that worked:
Boiled rice with yogurt with mild sauces.
Bananas and apples with black salt.
Eggs sunny side up with lots of salt.
Vanilla flavored desserts.
Couldn't stand chicken or fish .
One of things that I could eat a lot was kada parshad, an indian dessert. It is a smooth, soft, velvety and rich halwa made with whole wheat flour (atta) with sugar and clarified butter ( ghee). It gave lot of energy too.
An oncologist had suggested it. You can Google its recipe or ask some indian friend for its recipe or even prepare it for you.