Hey buddy, how's it going?
In my view, it seems like some kind of stress, but it's still early to tell.
Let a few days pass for more leaves to appear, and see how the new leaves come in.
I think they will come in normal and healthy, as long as you're watering with regulated pH.
But don't worry, it's nothing you can't handle; at this stage, the plant recovers more easily from any issues it might have.
Good luck and hugs!