You can get chicken feet in the U.S. so there's no reason to guess, just go out and try it.
In my experience the taste is nothing special, but the texture is notable (the skin is fairly rubbery). More than anything, though, they are hard to eat; not much meat and not really worth the effort.
I had a pretty poignant moment eating food in China. It was a chicken dish with some bones in. Lots of vegetables, flavorful, exceptionally fresh and delicious, all that. Suddenly I realized that the bone I was biting into was beak. It tasted like chicken.