Is this MAAP jersey too tight?

This is my second jersey purchase from MAAP. This is a medium, my first was a large and I felt it was a bit too loose. I love the color and quality, but the bulging zipper makes me think it might be too small. I like it enough that I’m considering ordering it in the large size. What do you think? Is it too small and tight, even for aero?

Sorry about the gross sweat spots, I took this right after a quick test ride.

https://maap.cc/products/blurred-out-pro-hex-ls-jersey-2-0-blue-mix

by BrianMincey