I am waiting to see also what everyone thinks it is, as I also have 2 that look just like it!
Bought them from the "assorted polish" pen at the feed store, who also gets it's birds from Ideal. I had a feeling they were not polish when I bought them due to the muffs and tiny puffs on the head. Also they appear to be more "bulky" than a polish chick. I believe mine might be about the same age as yours is. They also are starting to get that "alfalfa cow lick" hairdo as I call it.