Deer. Bunnies.

Dan

but why would they only eat the peppers and not the carrots and celery that were right next to it. I don't think we have bunnies around here. I've never seen one, anyway. It's the top of the peppers that's gone.

Perhaps a picky squirrel?

I vote for bunnies, too. They really like peppers.
Woodchucks are often out at night, as well.
Gee, where are those night vision goggles when I need them?
(Not sure exactly where your garden is....)

I do need night vision! My garden is in SF Bay Area. I would place my bets on a squirrel. I've never seen a rabbit here. I'm going to get my fence around my garden this week. I'll be really ticked if everything gets eaten as soon as it's ripe!