In a medium mixing bowl, combine the ingredients for the butter rub and set aside. The butter should be soft but not melted. It’s ok if some of the juice does not fully incorporate with the butter, we will baste with it.
Preheat oven to 425℉. Place the chicken with the breast side up on the wire rack of a roasting pan and pat it dry with paper towels. Gently loosen the skin and rub some of the butter mixture underneath. Take some butter and rub it all around the chicken and inside the cavity. Save some of the butter rub for basting.
Stuff the cavity with half an orange, a bulb of garlic with the top chopped off so the garlic is exposed, and a few sprigs of each of the herbs. Tie the legs together with kitchen twine and tuck the wings under the bird. Season all over with salt and pepper to taste. Bake for 30 minutes.
Once the chicken has roasted for 30 minutes at 425℉, remove from the oven and baste it. Reduce the oven to 350℉ and return to the oven to bake for about another hour and a half to two hours, basting every 30-45 minutes. A 6.5 lb whole chicken should cook for about 2 hours and 30 minutes total. If the chicken is browning too much, loosely tent it with aluminum foil. The chicken is done cooking when the thickest part of the breast meat measures 165℉ and when piercing into the thigh, the juices run clear.
When the chicken has finished baking, allow to rest out of the oven and loosely tented with foil for 30 minutes before slicing. This allows for maximum flavor and the juices to seep back into the meat.