Preheat over to 350*. Spray a roasting pan with cooking spray;.
Slice onions 1/4 in thick and arrange them on the bottom of the pan. Dice garlic; set aside. Remove chicken from package and rise with cold water.Rub chicken with a little bit of oil (size of a dime, or a nickel) and.
place chicken in prepared pan and sprinkle with diced garlic and all seasonings (if using fresh rosemary, lay it on top of chicken). Slice lemons in half and squirt juice from the lemons and drop rind in the pan.