I think this is a great way to use technology. I think that there is a great opportunity for using game dynamics to get kids excited about nutrition in a way that abstracts out the concepts and just makes it fun.

I think if someone can distill that formula, it could be a life changer - esp. if you can appeal to kids now in their formative years.

In the same vein, here is an iPhone app that extrapolates on the concept (ie: making nutrition fun):

http://www.lalalunchbox.com/

*full disclosure: I know the developer but it's an amazing product nevertheless