LOL. Before I was mostly-vegetarian I cooked everything in bacon grease. Yum yum!
It depends on what "healthy" oils they are using. Most fast food places use canola oil, which is cheap and doesn't taste like much of anything. Chinese restaurants use peanut oil instead, which IMO tastes awesome. When I used to make oven-fried chicken, if I didn't have butter, I used peanut oil, and it came out pretty good. I never liked KFC though, the chicken was always stringy and dried out. Homemade buttermilk-soaked chicken, oven-fried in butter with just a touch of black pepper, nutmeg and garlic or onion powder in the dipping flour, mmmmmm.
Whether they are crispy or soggy depends on how hot the cooking oil is. If you get the first batch of fries of the day, they're usually soggy because the fry-o-lator isn't quite up to temperature before they start throwing bags of frozen fries in there.
Ahem. Sorry for the thread drift. Anyway, my chickens decided they don't like salmon. Which kind of sucks, because I eat a lot of salmon and end up with leftovers, and now nobody will eat them.