The problem with Pringles is that they are full of saturated fat, which is the least healthiest form. Despite the extra calories of Pringles, some of us have to avoid the extra saturated fat. Now, if they could make those things with nut oils and olive oil or something, that would be interesting. Of course, they would probably taste like crap.
I was on a trek in Nepal, and we had been eating moderately healthy food, but it was rather low in fat. One day, one of the guys found some Pringles for sale, so he bought the small size can (smaller than a Coke can) for about $8.00. He wolfed that down in a few minutes because of his craving for fat. Then he went back and bought another one.