Heat Oil in pan. Sprinkle spices on both sides of each chicken breast. Add chicken breasts to hot oil and turn to medium high heat. Brown on both sides until golden (approx 4-5 minutes).
Add 1 tablespoon bacon drippings, diced onion and brown sugar. Stir well then turn heat down to medium and cover. Cook for 20 minutes stirring occasionally. Turn chicken over and cook an additional 15-20 minutes or until chicken is completely done (when juices run clear).
Move chicken to a baking dish and pour caramelized onions and brown sugar sauce over chicken. Drain excess grease. Cover and put off to the side. Using same pan you just cooked the chicken in fry diced bacon until crisp. Sprinkle over chicken. Top with cheese (1 slice per chicken breast) and place in oven. Bake until cheese is completely melted (approx 1-2 minute depending on how thick you get your cheese. I get mine sliced very thin). Remove from pan and place on plate making sure to place any fallen bacon pieces back on chicken before serving.