Elementary, middle, and high schools offer a summer food program with free breakfast and lunch for any child ages 1 to 18. More details here: https://www.lincolnfoodbank.org/summer-food-for-kids/
As always, you can use the Food Bank Food Finder to find additional food distributions near you: https://www.lincolnfoodbank.org/get-food/food-finder/
The Center for People also has food security resources you can apply for here: https://centerforpeople.org/basic-needs/peoples-pantry/food-security/