Food banks. Look at your local church, synagogue, or mosque. A lot of them do community outreach and have some kind of food bank.
If you're skipping meals or you have $5 'til next Friday, the food bank is for you. Don't feel like you're taking something away from someone "more needy." It's you. You're needy. Take the help. That was a hard lesson to learn in my 20s.
If you have a gurdwara in your area, they often do free meals, almost like a restaurant. Baptist churches tend to have dinners on Wednesdays, and the Hare Krishnas are always good for some heavily dairy vegetarian foods. I wish more people knew this.