Whisk together the Dijon, oil, lemon juice, soy sauce, garlic, salt and pepper for the marinade. Marinate a whole cleaned chicken at least 4 hours.
Put a lemon rind or two along with the rosemary and thyme sprigs in the cavity of the chicken.
Roast at 375 until done, basting periodically, probably about 2 hours for a 4-5 lb chicken. Or roast at 325 for 3 hours. Pulling at the drumstick to see if it moves easily is one way to tell if it's done. Or get yourself an instant meat thermometer to be sure.