Sheet pan meals are the best! You place your entire meal on the tray, chicken and protein together, cook them and all there is to the cleanup is throwing away the parchment paper and you are done! This recipe uses lemony sumac and a great spice mix to coat both the chicken and the vegetables. The cauliflower, carrots and onions roast until they are carmelized and their sweetness comes out – making for a great balance with the chicken and roasted lemons. (Adapted from Cooking Light)