Can anyone help diagnose whats going on here when I try and install
fonts in a pkg_comp/pkg_chk chroot?

Its at the very end of the make install phase.

/usr/pkg/bin/gmake  install-data-hook
gmake[2]: Entering directory `/pkg_comp/obj/pkgsrc/fonts/font-adobe-100dpi/default/font-adobe-100dpi-1.0.0'
/usr/pkg/lib/X11/fonts/100dpi
gmake[2]: execvp: /usr/pkg/lib/X11/fonts/100dpi: Permission denied
gmake[2]: *** [install-data-hook] Error 127
gmake[2]: Leaving directory `/pkg_comp/obj/pkgsrc/fonts/font-adobe-100dpi/default/font-adobe-100dpi-1.0.0'
gmake[1]: *** [install-data-am] Error 2
gmake[1]: Leaving directory `/pkg_comp/obj/pkgsrc/fonts/font-adobe-100dpi/default/font-adobe-100dpi-1.0.0'
gmake: *** [install-am] Error 2
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/fonts/font-adobe-100dpi
*** Error code 1