Packing lunch for school can be hard on parents.
I suggest you sit down with your kids and make a list of things they want to eat in their lunches. This can lead to discussion of the foods that are nourishing and foods that are not so good for your body.Putting food choices into a context that kids can understand can be helpful. The traffic light model works well. Green light foods are good for you. Eat as much of them as you like.