What do you consider healthy?
It can be pretty difficult even as an adult to find healthy, which I consider unprocessed foods, no red meats, and lots of veggies. I tend to avoid salad as it’s at risk for cross contamination. And there have been a lot of recalls tied to lettuce.
Kids menus tend to be full of heavily processed foods. You might want to share from an adult menu.
But also consider that you’re walking about ten miles a day in the sun. You’re going to want some more fats and salt in your diet.