I gave Bean some applesauce based on an old post here hopefully that helps with the poop. She’s very inactive as well and not eating much.
The discoloration is almost as though she’s lost her pigmentation around the base of her head in a ring around to the chin. I have a photo of the discoloration but don’t know how to share it here.
It sounds like a shed coming on. You can upload photos here https://www.beardeddragon.org/useruploads/ and post them to your thread using the XIMG button when you reply.