Chicken is a versatile meat that can be cooked numerous ways to achieve different flavors.
You don't need to ever eat liver to get your daily dose of iron; many foods, including meat, poultry, fish and vegetables contain iron. Liver does serve as an excellent source of dietary iron, but you can easily meet your iron needs without ever eating it.
Anything you want but if you have any liver damage you should consider a health diet as should everyone really. More fruits and veggies less fat less sodium but that is for all the time not just on treatment. I had a slice of pizza yesterday.