Thankfully that's not normal in my experience
Early this year someone in the flock was probing the fake eggs I put in the nesting boxes to encourage the pullets to lay there and not elsewhere. The tester inflicted serious and extensive damage on the rubber egg, and on a clay one, but none on a golf ball (not for lack of trying I'm sure; they're just much tougher), and I worried about real eggs getting destroyed by this tester. So at least one bird in this flock takes a serious interest in who's laying what in the nestboxes, and doesn't stop at a mere visual inspection.
I removed the offending and damaged fake eggs, but left others, and they weren't tested (or at least damaged by any testing that occurred). Bizarre, but there it is. Since then, egg laying has been in full swing, and a week or so ago a single egg had a hole in the side, but I'm sure that was Eve's spur not a peck by whoever.
Can you frame an experiment to test your hunch Shad?