Sick chicken

[61L35]

Hello! This is Lola my hen she is 1 year old and she’s acting lethargic and not like herself. She was acting fine earlier in the day but started looking lethargic in the afternoon yesterday. I was hoping she’d feel better today but she’s still acting lethargic I checked her vent and felt it for an egg but nothing. Her crop is also a little full but isn’t really eating and drinking her self. Her poops also look a little off like yellowish greenish poop I’ll attach a picture does anyone have an idea what it could be?