Changing Font Size in Terminal Console [Not Solved Yet]

I'm trying to work with OpenWrt installed on a Pi4.
I have a monitor and keyboard connected directly on the Pi4, no need to SSH.

The Font Size is uncomfortably minuscule.

Is it possible to change the font size by modifying a configuration file or adding some command somewhere?
I found the /boot/config.txt file but can't find any directives on the subject.

Thanks for your help.