I have a NH Red laying poor quality shells too. LOL... thought your pic was one of her eggs. Mine isn't a new layer. She's 18 mo old. Our layers have everything - oyster shell, grit, top quality laying pellets, free range pasture.
Some hens just make a poor quality egg no matter what....it's their body, their genetics. I've isolated the NH Red to be certain it's her. She did lay one egg with a thicker shell, but it was rough like sandpaper. She'll be butchered with some young cockerels in the next week or so.