ALL of them?

[TheOddOneOut]

The key determinant for producing eggs is whether daily light period vis a vis dark period is increasing or decreasing. Temperature and other weather conditions have very little to do with it.
You are now at 8 hours, 48 minutes of day length and it will only decrease by one more minute before it starts increasing. Patience. You'll be getting eggs again in another month, especially if you stop the layer feed and switch to something with higher protein like starter, grower or all-flock.
They aren't laying now and don't need the calcium - hence they aren't layers. They are just mature female chickens - not layers currently.

While chickens are a great way to make use of table scraps, too much per bird can dramatically alter ideal nutrition, which is what is in the feed bag, so I'd stick with just feed till things return to normal.
You have six birds and feeding table scraps can have a big impact on nutrition.
I have about 60 chickens and even if I offer all our table scraps and leftovers, most of the birds would be lucky to get a bite.

Very helpful!
They don’t get too much, but I will keep this in mind.

 

[halefamily_flock]

Pullets will go through a mini-molt at 9 months and may stop laying. I had 23 hens/pullets laying 12-18 eggs/day and they almost all stopped at the same time. I had expected my four 18-month hens to molt, and they were really obviously balding when they stopped laying. But the 9-month old pullets were a mystery. After doing some research, I found out about the 9-month mini-molt and started noticing the non-layers looking skinny. When I picked them up, I could feel that they had lost feathers underneath and were starting to grow pin feathers. They have been off for nearly 2 months, with only Welsummers & Welsummer crosses continuing to lay, and 1 of 6 Dominiques who continued laying through the entire molt. I just had a Speckled Sussex and one of the Dominiques start laying again. Hopefully more will follow!

 

[TheOddOneOut]

To update:
We have a layer!

My plucky lil SS came through. She lays every other day.
Cheers to Nutmeg!

 

[TheOddOneOut]

Nutmeg is still working hard as the others slack off.
She's a good girl.