I think what kills the sport is you have uneducated parents that think they are dieticians. They freak out if there kid doesn't get to eat so much food, but in reality if you stick to the actual portion sizes for things...you will be fine. Maybe get a small fry and a grilled chicken instead of the Super Sized Cheddar Soaked Potato sticks and Quadruple BiPass Burger.

Also maybe go for a 30 minute walk/jog in the evening (parents can join in) and that way in the mornings you are able to eat breakfast that may be a little larger then normal.