Lots of time my rabbit would gently chew his paws. Other times he would chew more when his nails were to long or fur got in his way. Once nails trimmed about one or two days later much less feet chewing.
I did some nail trimming, too. It's a very delicate job because one shouldn't cut too deep. There's a way where I learnt from HowCast of doing the soft press twice before actual cut on the nail. This would give the bunny to retreat if one were about to cut too deep.