the pellets have sun seed in it, so your chinchilla would probably dig them out and eat them. I would say stay away from pellets that have treats in it. I don't know if this is a good brand or not, but i've never heard anyone recommend it. Mazuri and Oxbow are the most popular brands. If you are changing the brand, remember to do it slowly so it doesnt upset your chinchilla's stomach! This is really important. Sorry if you know this already
just making sure because i had no idea about this until someone tell me =]