They look pretty normal to me. How along ago did you put them in your tank? They are still aclimating to your lights and it might take a few days for all the polyps to fully open up.
If all of them aren't open after a week, I would say that you might have a pest eating them. A nudi or a sun snail. They are usually visible after the lights have been off for about an hour. I had a nudi on my zoa's, but i sucked that sucker up with a syringe, and so far haven't seen any more!