Adding an option to change profile picture sizes in chat?

Profile pictures in chat are in my opinion too small. This especially shows when enlargening font size.

A good solution to this problem would be an option to change profile picture sizes in chat, much like changing font sizes.

I have changed the font size, but the pictures are far too small and don't match the font size, making the chat a bit uncomfortable to look at.

Zooming in and changing font size to small patches up this problem slightly, but then everything else also becomes big, e.g the sidebar, which isn't very nice either.