An extension that will allow you to change the default font used in Slack, and separately the font used in code blocks
https://virutcham.ca
https://amkhrjee.in
Elisha Leventhal
https://fontsly.com/
SG
https://taskscape.com
karn
yutoyag
Kip
Re-Font
https://rxliuli.com
ExtensionHub