Yeah, they own you now! They know you're the source of food and there's nothing that excites chickens more than the sight of food. The pecking is an overeager display of excitement. It's not easy to train a chicken not to do it other than cup a hand over their beak to force them to slow down...
Like I said, they have it made! They should settle into such nice quarters very quickly, and begin laying eggs very shortly.
You can increase the likelyhood of eggs if you've provided a private place for them to lay with some straw or even shredded paper (like you run through a shredding...
Many of us here are envious of your balmy climate. Your chickens sure have it made!
Have you provided a nest for your new hens? A coop? If you want to eat the eggs they lay, they will most probably hide them in the bushes where you will never find them, so you'd do well to give them a nice...