Had a highschool art teacher who would let me stay in his classroom during lunches. Always gave me half his sandwich and other extra food because he knew I didn't eat much otherwise.
Edit: He would also keep a drawer in the classroom stocked with snacks so that I could swing by and grab something between classes if I needed. No, he never did anything "questionable", and no, I never "fell asleep" after eating the sandwiches. He was just a kind person :)