Oregano is fine, but mine hate it! Thyme is great, my buns love the stuff, chives are okay, but should be fed in limited amounts, although some sources say they are unsafe, parsley is popular, but high in calcium so again you'll want to limit it. As for fennel, I think its on the safe food list, you'll have to take a look at the 'care reference' section
Mine LOVE coriander, camomile and rosemary too.