I totally remember loving those school lunches because I was hella hungry. Many of my friends were in the same situation. No child should go without food at school for any reason.
Talk to him!!! Laugh. Crack jokes. You give him help by being a live in person human friend. You're sitting directly next to each other, meanwhile you're secretly recording him to get some random opinions on the Internet that don't matter. These kids really don't know how to be social?!