I just read a rooster post that posited this very same theory.
Yeah, we plan and the chickens laugh, or bite.
I had a pair of Lt Brahma chicks that never settled when handled, back when I was handling chicks regularly...they would just keep screaming.
Low and behold one day, at about 3-4 months of age, one came up to me and wanted to be touched, she walked onto the nest perch and over right next to where I was standing. I touched her chest, neck, beak, head...and she just stood there, so I picked her up and continued petting her then put her down and she just sauntered away totally unafraid. She continued to walk up to me to be picked up and petted for a few months, then got over it, but was always calm when handled. The other one would do the same but to much lesser degree. When it was time to rotate them out of the flock, I sold them as pets to a family with young kids instead of eating them.