School lunches??

Hey moms or dads, so I am using the shoe organizer for packed lunches idea and I cant really think of anything a little bit healthier than chips everyday to put inside the organizer for my son and I to eat. Our son just turned 5, starting kindergarten, and is really picky as is when it comes to eating. We have very busy lives with a new baby on the way, me in nursing school, and SO working midnights, so it’s important that I have everything for all of us prepared ahead of time. I will be in school from 1pm to 7:30pm tuesdays-thursdays, with a 1.5 hour break, so i’m eating my lunch and dinner there!! Any healthier food suggestions? We arent opposed to eating chips and cookies, just not everyday! Lol.