I could see supporting with this, but it does seem like an abuse of the 'for the children' argument for this. Children pretty much have to eat what you give them until they get a job. Also some chicken nuggets are bad, but some average a gram of protein per 10 calories, which is a pretty good ratio, and especially for frozen food. Can't help but think this is too broad.
more so in the past, there was a lot more food advertising directed at kids, because the thought was that kids could annoy their parents enough to drag the whole family to an establishment. and some marketing tricks work a lot better on children because of their social settings and general impulsiveness (e.g. "All the cool kids have Lunchables")
Kids don't have the defenses against manipulation, especially when it's refined by billions in research dollars and decades of work by scientists and psychologists dedicated to exploiting their young minds.
Research has shown that kids (even into their teens) can't tell the difference between ads and content. They don't even know an ad when they see one, and the line between ad and content is often intentionally blurred. I've even seen adults struggle to identify ads when they're right in their face.