'Normal' varies with chickens, observe and patiently learn what each birds 'normal' is....
.......and you'll be able to tell when something is abnormal.
Nothing special is needed as long as they have a decent balanced diet, plenty of fresh clean water, and not too many 'treats'.
That's just a curiosity peck....gather eggs as frequently as possible to avoid a habit starting.
Fake eggs/golf balls in the nests can help.
But it can take up to a month or so for things to smooth out.
Meanwhile, eggs everywhere, some of them can be rather funky looking, soft or thin shelled...
Haha!! Looks like she knows where to lay...and is 'practicing'...but fake eggs/golf balls can help if needed.
Won't be long, I'd bet.
The vocalizations that pullets make at onset of lay can be an incredibly loud cacophony...SHM...it's crazy!
The first time I heard an egg song I also thought...