Spicy Baked Chicken
["1 (3 lb.) chicken, cut up", "2 Tbsp. wine vinegar", "1/4 tsp. garlic powder", "1/2 tsp. oregano", "1 tsp. salt", "1/4 tsp. pepper", "1 Tbsp. olive oil", "2 medium sliced onions", "1 Tbsp. butter", "1 large can peeled tomatoes"]
["Wash chicken; dry and place in bowl.", "Combine vinegar, garlic, oregano, salt, pepper and oil; mix well.", "Pour over chicken; cover and marinate in refrigerator for 3 or more hours.", "Preheat oven to 350\u00b0."]
["chicken", "wine vinegar", "garlic powder", "oregano", "salt", "pepper", "olive oil", "onions", "butter", "tomatoes"]