what’s a good diet for smokers?

I smoke a lot so I don’t eat that much what are some good foods to have?

I have been trying to start my day with a slice of toast cause carbs that’s a good way to fill a stomach right? not sure if I should be putting butter on it if it adds some good nutrients?

I eat fruit but like should I also eat a tomato?
what’s like basic nutrients one should consume

If I don’t eat that much but eat alot of salt is that bad? Olive oil is good for you right?

Like if I’m going to eat one pretty big meal a day what should I include to maximise my health?

what’s a good diet for smokers?