Has anyone dealt with eggs with really, really thick, jelly texture whites?

I got a new hen about a month back whom I was told was 1.5 years old and started laying last year. She’s a large Brahma, and her eggs are kind of hilariously small compared to my smaller breed hens, basically the size of pullet eggs. I’m not sure if there was a mistake on her age and maybe she’s a new layer, or if she just lays comically small eggs.

The thing I’m most confused about is the texture of her eggs - the whites are so thick and jelly-like, they sort of stick to the shell when you try to break the egg, and you have to really pull it apart. I feel like the video doesn’t do it justice. It’s actually kind of hard to get them to mix with other eggs when scrambling, etc. Has anyone ever dealt with this before? It’s kind of weirding me out.

I don’t think it’s likely relevant, but she was treated with ivermectin right before I got her, and recently elector psp.