Dear Doctors: We have three kids in school, and they’re not always happy with the lunches I’ve been packing.Our 7-year-old is the easiest – he loves his PB&J. But his 9- and 13-year-old brothers are a lot harder. You have mentioned you are parents. How do you deal with school lunch?Dear Reader: As moms who plan and pack school lunches, your question resonates w...