My chickens had horrible diarrhea when I gave them corn. I'm not sure at all if that's what's going on with your girl, but
Has the poop been like that for 3 days?
she is acting normal. I thought if she would be sick she would be lethargic and not eating or moving. She is doing all that though. She just fluffed her feathers up. I dont get why the poop is green since she hasn’t
No more olive oil for now.
Feed her normal feed, no treats for a few days. See if it clears up.
See that her crop is emptying overnight.
Is she eating at all hours since you've had her inside? She needs to be sleeping from dusk til dawn in the dark with no light.