By Cathy Branciaroli, Food Correspondent, The Times Roasting chicken thighs and accompanying savories on a sheet pan makes for a simple supper. Whew – we made it through the holidays, with plenty of rushing about and cooking. So now, it’s time to relax and to prepare simple, easy suppers. But make no mistake in underestimating such simple dishes. They can be bursting with flavor. I think of simple...