The recommended solution was to change the ttyl resolution but this is the quick and dirty fix.
$ sudo grub-mkfont \
--output=/boot/grub/grubfont.pf2 \
--size=36 /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf
$ sudo gedit /etc/default/grub
# Copy and paste this line:
> GRUB_FONT=/boot/grub/grubfont.pf2
$ sudo update-grub
$ sudo reboot