The art has looked off to me for a while, and I remember really liking the art at first, so I wondered if it's just because I've gotten used to it now and I'm noticing issues with it more. So I decided to go back and look at an early chapter.
Nope, it's definitely changed a lot. Look how much cuter it was early on. I guess it's difficult to do 245 chapters and still maintain a high level of art quality, but it is a shame.