I can suggest a custom wooden enclosure... two openings, one from the front and one from the top. Use at least 1/2 min plexiglass, solid wood, and heavy duty hardware. Set a clasp into the lid(s) that can be locked with a padlock. Use screws, not nails. The top access point would help prevent any tagging or direct interaction for feeding and maintenance. The front panel is for spot clean, or maintenance once the baby is old enough to know better.

If you happen to have a long bed pickup truck and about... three? friends.... I have the perfect solution for you, Im in Jersey If you can show up you can have it. All it would need is a padlock.

Anyways, good luck.