We're in an obesity epidemic and most people don't know how to cook even very basic meals.
Make space for it, squish other classes if you need. Make it mandatory, everyone has to take it. Maybe even ongoing through multiple grades.
Edit: Rice, beans, and even basic meats are cheap. To eat healthy you don't need your meal to be 100% Bell peppers and tomatoes.
Throw in some frozen veggie (hell you can find fresh ones decently priced if you buy veggies that are in season) and you’re set.
People way overestimate the costs of a healthy meal plan. Truth of the matter is that it requires time, and it won’t taste as good - if you aren’t decent in the kitchen. That’s most people’s problem.