How can i get my rabbit to eat healthy food?

Try different types, and I would go to a pet shop instead of the supermarket. Where I live you can't get rabbit food in supermarkets anyway. My current rabbits won't eat the 'Excel' pellets but really like 'Selective', however my old rabbits used to like the 'Excel.' The food should be one type of pellet and not mixed. Find one he likes :D