Yes, lol, chickens and veggie gardens don't mix. My patch of garlic disappeared in about 1/2 hour, it was growing so nicely, sigh.
A tractor is a wonderful invention, and can be really cute and ornamental, also. Chickens need to be protected, also. There are some breeds that should not be confined to tractors, do your research.
I'm planting some Chard just behind some pole beans, I hope that works. I have a lot of seeds! Not today, tho, have to wait until Monday evening, the 15th so the Moon will be right. I haven't found chard plus beans yet, but beets, yes, and chard is leafy beets, no?
And I still need something for between the two short rows of okra. Since the garlic "disappeared" last week. There are feral chickens in my neighborhood. I plan a screen house for the veggie patch. Maybe lettuce, or bok choi. Wheee, chickkies really love those!