Is this coral looking good?

[sumpfinfishe]

I wouldn't worry too much as of yet, it could be deflating simply due to a water change or a change in lighting or tank placement change.

I just moved a green open brain into my new setup and it did the same thing,
simply due to increased lighting(hear that brad lol) and also because of a
temp change.

If you want to feed it some mysis or silver sides, that's best at night when all its feeding tentacles are fully extended.