So these chicks could be from "pre-Smiley"? Could it be that he is not quite ready to make babies but has been able to figure out what he needs to do to be helpful, or perhaps the stress of a fight stopped the embryo development of his chicks at a critical stage?
No, these eggs are definitely Smiley's, the timing doesn't work for Hart ... and Smiley is old enough, he's five years old, Hart at only two was more of a question mark for us this year, but that too didn't seem to be a problem.
As for Princess' fight, it is possible, she certainly looked worse for wear and she hung out in the nestbox for a couple of nights which isn't something she does often but that was likely her making sure no one could slip in after hours so to speak.