In microwave baking dish, mix together olive oil, tomato, celery, parsley flakes, garlic, salt, pepper, oregano, basil and nutmeg. Microwave on high for 3 minutes, stir; add chicken, covering with mixture. Cover and refrigerate overnight or for at least 3 hours. When ready to cook, cover baking dish with waxed paper and microwave on high for 10 minutes. Turn chicken over.
Let stand 5 minutes. If fork cannot be inserted in chicken with ease, return to microwave for brief additional cooking. To serve, remove garlic slices and spoon sauce over chicken. Makes 4 servings.
Always cook chicken until well-done -- an internal temperature of 180 degrees for bone-in items and 160 degrees for boneless items. All juices from the meat should be clear.