When Chickens Go Bad

I am a sucker for our chickens... they live in the back corner of our yard, in a lovely big coop all to themselves, and when I go down into the yard they walk up and down the fence line, making that burk burk sound, wanting to be let out. They LOVE being let out. They scratch around the yard and follow me like mini road runners when they think I have food for them. I really enjoy watching them, scratching at the dirt with their lovely bloomered chicken legs, then taking a look at the ground to see what they've come up with. It's a bit like watching television, kind of hypnotic... but are they happy with just a scratch at the ground? Oh no... they want more...

They want my veggies.

These were broccoli and capsicum...

Here you go... chickened capsicum.
And the broccoli.
And here are the offenders... they don't have names, although it has been suggested K, F and C, which I did think was pretty funny. So this is the black and white spotty one.
The red one.
And our lovely little silkie. She is just beautiful, so gentle, and a great layer, I get almost one egg a day from her. Sweet little teeny eggs too. She is the only one the boys can catch, and they put her in their prams or trucks and push her around.
Anyway, I'm not letting them out again until I get over this current attack... I wonder if chickens understand when they are on time out?