Mushy layers pellets?!

Hello,
I'm new here and new to chickens. I got mine 4 days ago and they have settled in nicely, laid an egg each day (they are warrens) and respond to me calling them so I think I'm starting to build up a bond with them!
The 2nd day in a gave them some meal worms as a little treat and yesterday and today I noticed that they weren't eating their layers pellets. Last night, when I was removing their water feeder to change the water, some had dripped onto the pellets they had thrown out and gone mushy. To my surprise, they gobbled these down, so this morning I decided to soften some up and sure enough, they went down in a flash.
I want to make sure they are getting the right nutrients, but is this ok? I noticed one of them didn't lay an egg today and now I'm worried she either hasn't been getting the right nutrients or the mushy pellets have made her ill.
Can anyone put my mind at rest? Also, I've not seen them going to their grit box-how often do they pick up grit? I had been scattering some in their run so they could forage.
Many thanks.

Thank you for that, that's eased my mind! Yes I noticed the bowl got very messy and the chickens' faces!) so will alternate bowls between feeding and cleaning.
Is it common for egg production to start dwindling now? Was I just extra lucky getting an egg from each for the first 3 days?

some of mine love their pellets made into a thick mush especially the ex batts - they think they are getting a real treat when I do this, however remove it daily and if there is any left over chuck it as it can go mouldy quickly and lead to illnesses.

A layers meal or mash form of the feed is also available, which saves you mashing down the pellets. It is already in powder form - just add water.

ideal way to get flubenvet into them, they think the soft pellets are a treat and it goes down very quickly. add a bit of tinned sweetcorn, and watch the meal fly !!! we use a large dog bowl, and they keep coming back during the day, and by the evening there is very little left.
they still have layers meal in the run.