Right, let's talk about Pixie. She's a bantam hen, which means she's already working with less real estate than your average chicken, and you've never actually caught her in the act of laying. Then, little eggs start appearing. The natural instinct is to blame the small bird. But the math isn't adding up, is it? A bantam egg is small. The eggs you're finding are still small, sure, but they look like they belong to a larger lady. You've got a Brahma, a Barred Rock, two New Hampshires, and an Easter Egger pullet in that coop. That's a lineup of suspects, and Pixie is the most obvious, but probably innocent, culprit.
Your Easter Egger pullet is almost certainly the secret layer. Pullets are notorious for their tiny first eggs, often called "pullet eggs" for a reason. They're smaller, sometimes oddly shaped, and they come from a bird that's still figuring out her plumbing. You're looking at these eggs and thinking they seem too big for Pixie, but they're likely just right for a young Easter Egger getting started. The two New Hampshires are too consistent with full-sized brown eggs, the Barred Rock is a reliable standard layer, and a Brahma's eggs are usually bigger than what you've found. The math points to the pullet, not the bantam.
If a reader came to us with this same mystery, we'd tell them to play detective for a few days. Hang out in the coop around late morning, that's prime laying time for most pullets. Watch who goes into the nest box and for how long. Better yet, if you can, block off the box for a couple hours and wait. You'll see the Easter Egger emerge looking proud, or you'll catch the Brahma sneaking in for a quick lay. The practical solution isn't to stress over the size mismatch; it's to sit down with a cup of coffee and watch your flock. The answer will waddle right out.
So here's the concrete point: stop pondering the impossible and start watching the Easter Egger. She's your most likely culprit, and once you see her drop that egg, you'll know for sure. No need to rename your flock or send Pixie to trial. Just keep an eye on the pullet and thank her for the surprise.