Experience with food gorging?

I totally agree that no kid should be put on a diet...we are doing the same here...lean proteins, fruit, veggies, Cheerios as crunchies, diluted juice. The gorging seems to be more habit than psychological if that makes sense. When we tell him mealtime is over he is distracted within a minute and on to something else. According to a SW it was commonplace for him and mom to sit down and take care of a bag of Cheetos between them.Normally I wouldn't cut any kid off at mealtime but he lacks the trigger to stop. We are dealing with shoving handfuls of any food in his mouth too, and he seems to be responding. Thanks everyone for their advice/experience....I appreciate it. I needed to make sure I was making a tactful food decision....don't want to be seen as the food nazi.