I really like the idea. but how can you carry a teenager to go to a chef training program unless they already like food and cooking? - I believe, the girls might go for that, but not the guys and the main aim is addressed to both girls and boys- I HOPE my predictions are wrong and the idea WORKS.
You can find the answer in a book written by an IDEO-man, Tom kelley. "The ten faces of Innovation." when he talked about how 'Observing' and 'Contacting' with the kids can make a huge difference and can inspire a lot with the way you produce your product. The answer can be in the simplest form as we are talking about kids who have simple but vivid minds. a comic book with little cute, catchy pictures can be the answer. Parents -who know about fresh food and cooking- can come talk to the kids and open discussions for them to see what do they like and what they don't and it might help later to see for real what kids need, or what might be fetish enough to provide them with fresh and healthy meal.