I wouldn't think so. Or it won't hurt the chicks anymore than the mites definitely will...you can get poultry dust at TSC and sevin dust anywhere that sells gardening stuff
Diatomaceous Earth is useless in most applications...
So get either sevin dust or poultry dust and give them a dusting. I got my first chickens off of craigslist, and I knew that they had mites, but it didn't seem to be causing any issue, so I figured they had a few but no big deal...but then my...