Distressed chick

Well, I have a distressed chick. I don't know WHAT is wrong with her. She is chirping chirpING CHIRPING very loudly and I don't know how to help her!

I have lowered their heat lamp, changed their water:

their food:

and given her lots and lots of attention. I have an inkling that the problem might be attention, which would be terrible, because every time I hold her, she is happy. AHH! So Dan, Sayed, and I have taken turns holding her tonight.

All the other chicks seem nice and happy. I don't know how to help this little chick. Please Please sleep tonight little crazy peabody!