First time indoor grow...do these look alright so far?

OK, now I have two plants doing some weird flipping of leaves. Some of the leaves on these two plants are flipping on their sides. Next day or 2 they will be back to normal. And then do it again. They arent doing a complete flip to where the bottoms are facing up....just half way to being completely flipped.

What are they trying to tell me? I have never seen this happen before. They look healthy as can be...maybe a very little bit of yellowing on some leaves on the edges.

Anyone else have this happen and know what is causing it? They have plenty of light, and recommend amt. of nutes.

Should I be worried about this at all?

Thanks