Preheat oven to 450°F.
Remove giblets and neck from chicken; refrigerate for use another clay.
Rinse chicken with cold running water and drain well; pat dry with paper towels.
In cup, mix margarine or butter, chives, and parsley until blended.
With fingertips, gently separate skin from meat on chicken breast and thighs.
Rub herb mixture on meat under skin.
Sprinkle outside of chicken with salt and pepper.
With breast side up, lift wings up toward neck, then fold wing tips under back of chicken so wings stay in place.
With string, tie legs together.
Place chicken, breast side up, on rack in small roasting pan (about 14" by 10").
Roast chicken about 1 hour.
Chicken is done when temperature on meat thermometer reaches 175° to 180°F. and juices run clear when thickest part of thigh is pierced with tip of knife.
Place chicken on warm platter; let stand 10 minutes to set juices for easier carving.
Remove skin from chicken before eating if you like.