I am very happy to help. Partridge Penedesencas are very rare so it is understandable that they were hard to figure out. The leg color, shape, egg color, eye color and the comb will help with figuring this out. Yours does not have a good example of it, but look at the back to the comb--you will...
She is a partridge Penedesenca--That is a dark egg--about a 5 on the scale.
She is likely mixed with something because she is a bit too round but I have one that looks a lot like yours.
She is definitely a partridge hen. Check into what breeds the hatchery sells and see if there are other partridge breeds listen.
Does she lay eggs yet? If so, post a picture so that we can see the color.
How old is she?
Also, go to the emergencies section of the forum and start a thread there.
https://www.backyardchickens.com/f/10/emergencies-diseases-injuries-and-cures
This is from Hendersons chicken chart: http://www.sagehenfarmlodi.com/chooks/hendersonschickenchart.pdf
The Blue snow flake indicates that they are winter layers. They will lay with low light but not as much as they will in the spring. They will also molt and not lay their first fall. Yours...
The McMurray PR Cockerels were quite feisty. They did taste good though.
Try not petting him. Treat him like a Rooster and let him know you are the boss.