Make this with chicken, herbs and even infused olive oil from the Market - with a fresh Market salad.
Preheat the oven to 450℉ or preheat your smoker grill (like a Traeger) to 375℉.
Mix the mustard, lemon juice, olive oil and herbs in a small bowl. Rub the sauce over and under the skin of the chicken.
Place the quartered onion inside the cavity of the chicken, and place the chicken on a roasting rack in a roasting pan.
Roast or smoker grill for 1-1.5 hours or until the thickest part of the breast or thigh is 160-165 degrees (or no pink remains when you cut into the thickest part). Tent with foil, and allow meat to rest 10-15 minutes before carving. Enjoy!