Smear the Bajan seasoning inside and under the skin of the chicken.
Layer the bottom of the pan with the sliced onions.
Put the chicken stock in the roasting pan.
Paint the chicken with the melted butter and place the chicken on top of the onions, breast side up.
Place the sliced garlic and herbs on the chicken, sprinkle with salt and pepper and lemon seasoning.
After one hour remove the herbs and garlic from the top and place in the liquid.
After 30 more minutes, remove the chicken, turn it over and sprinkle with salt, pepper, lemon seasoning and the rum.
Return to the oven and reduce heat to 375 degrees.
Cook for approximately one more hour, basting every 20 minutes with the pan liquid and until the chicken reaches and internal temperature of about 165 degrees.