Preheat the oven to 350°F. Season the inside and out of the chicken with salt and pepper in a roasting pan. Onion powder is sprinkled inside and exterior. In the cavity of the bird, put 3 tablespoons of margarine.
Dollop the leftover margarine all over the outside of the chicken. Place three or four pieces of celery in the cavity of the bird. 1 hour and 15 minutes in a preheated oven bake uncovered until chicken is no longer pink at the bone and juices flow clear.
A thermometer implanted near the bone in the thickest section of the thigh should read 180 degrees F. (82 degrees C). Remove from the fire and baste with melted margarine and any remaining drippings. Before serving, cover with aluminum foil and set aside for 30 minutes.
Chicken is one of the healthiest meat options available, and understanding how to create its recipe is something that could come in helpful given the multiple benefits it provides. If you follow the advice given here, you should be able to accomplish your goal.