When in this configuration I boot up LE, I can switch to the console using Alt-Ctrl-F3.
For Ubuntu, I can use ubuntu dpkg-reconfigure console-setup to increase the font for the tty console.
I can update the grub configuration to use a lower resolution so that the grub menu is not very small.
There should also be a setfont and/or vconsole route to increase the font size for tty terminals but I have no experience with those tools. But neither are they available within the linux used for LE as far as I can tell.
And yes, I know I can SSH into LE. But that isn't always a practical solution for me.