Sure, but I don't see how this is significantly different than if I had gotten dinner at a restaurant. If I had bought food at a restaurant, and even if I got a dessert, that wouldn't have been questioned at all. For that matter, if I had gotten fixings at a grocery store to make sandwiches or something, that also wouldn't have been questioned. Every morning when I would drive to work on these trips I would buy a soda at a gas station, and that was never questioned, even after adding the receipt.
Fiber One bars have extra fiber, but ultimately they really are just glorified candy bars, not radically different than a dessert. I don't see how this was significantly than ordering a dessert at a restaurant.