Prepare rice according to package directions. Preheat oven to 350. Prepare a 13" x 9" pan with cooking spray; set aside. In a skillet over medium heat, cook chicken, onions, bell peppers, mushrooms, and garlic until chicken is no longer pink. Stir in tomato sauce, tomato paste, oregano, basil, black pepper, and salt. Simmer 15 minutes, stirring occasionally. Layer half each of rice, chicken mixture, cottage cheese, parmesan cheese, and mozzarella cheese in prepared pan. Repeat layers. Sprinkle with parsley. Bake, covered for 30 minutes. Uncover, and continue baking for 15 minutes. Serve with garlic french bread slices.