Usually I saute my chicken then put the pan in the oven to finish cooking. But I need to make more than my one oven safe pan will hold. Can I saute in a few pans and then transfer all the chicken into a baking pan to finish cooking? Would I need to add oil to the baking pan and/or let it preheat in the oven?
You certainly can. To make cleaning up easier I would line it with parchment paper rather than add oil, although a little bit of oil would work too. There shouldn't be any reason to preheat the baking pan before putting it in the oven.