Sometimes the first eggs of the season are really large. I was told once that really large eggs aren't fertile. Since I have had larger eggs hatch, I can't vouch for that statement. I have had several eggs laid on the papertowels rather than in the lay box and I have discovered that no matter how soon I am able to grab those eggs, they don't hatch. They are infertile. I figure that maybe she knows something I don't.
I still toss them in the incubator because hey you never know. AFT eggs are a little harder to hatch than leos, they have weird fertility. I had several eggs go full term last year and die in the egg.
Since these are your first eggs, let me give you some tips that I learned the hard way with baby AFT's. Last seaon I bred AFT's for the first time. I was having great success with leopards and was used to the way baby leos acted. What a difference with baby AFT's. Unlike little leos, these guys are REALLY shy. After their first shed, when you start feeding them, only toss a couple of cricket in at a time. Too many crix really stress these guys out. Make sure you house the babies separatly. I put two of my baby AFT's together, because I did that with leos for short periods, and one, refused to eat and was doing poorly until I separated them. He is a great little eater now, TG.
Good luck with them, they are a great little rewarding challenge.