Hen not quite right seeking advice

[lv9777]

I have a 3 yr old Barred Rock Hen who is acting a bit lethargic, her comb is a little pale and her crop was pretty empty when I checked tonight. She is ranging with the group and appears to be eating, drinking, and dust bathing. However, she is my top hen and usually a bit of a spit fire and she is just not her spunky self. She also is sleeping on the coop floor tonight rather then roosting. She has not laid an egg in 4 days, but I am in Michigan and its November. I do not feel anything that would lead me to believe that she is egg bound.
All the poop I can see looks normal. No signs of mites.

I will make her eggs laced with Nutridrench tomorrow morning. What else should I be doing or watching for.?
I know it does not sound like much when I write it out, but she is not herself and that worries me.

 

[Tonyroo]

Is she molting? Physically check for mite or lice.

 

[SmiYa0126]

Is she molting? Physically check for mite or lice.

X2. Good idea on the nutri drench and eggs. I've also force fed my hen when she wasn't eating.

Can you post pictures of her poop?

 

[lv9777]

Is she molting? Physically check for mite or lice.

She just finished molting. I cant find any mites or lice.
I will isolate her so I can get a poop sample. She ate some cat food today.
I have 3 pullets about 4 months old and I think one is challenging her status. Could she just be stressed?