...healthiest potato chips on the shelf... ...bread, there is soybean oil mayonnaise...
All of these are fairly high calorie foods, even if you buy them in a health food shop. You'd need to have a fast metabolism and be pretty active to get through all these.
If you eat more calories than you burn you will put on fat.
I think metabolism is a huge factor when considering the above examples; the guy that eats only healthy foods might not have an efficient metabolism and be doing enough exercise to burn off the calories he is taking in.
Also, the big guy that takes loads of pills (e's) and eats what he wants... I don't think this is a good example at all and it sounds like you also take them too (perhaps an explanation for you and your skinny jeans?).
All of these are fairly high calorie foods, even if you buy them in a health food shop. You'd need to have a fast metabolism and be pretty active to get through all these.
If you eat more calories than you burn you will put on fat.