When you give your LO meals, do you give it all at once, bento-style, or do you give things one at a time?

I really like the idea of bentos, and I bought some partitioned plates, but if I give my LO certain things at the beginning of the meal (like fruit, cheese, bread) then he will only eat those things. How do I make this work with a bento? Right now I feel like I have to make everything equally appealing (or unappealing!) to him.