Slow Cooker Chicken Cacciatore

INGREDIENTS

• 1/3 cup flour
• 1 Tbs. salt, plus more, to taste
• 1 1/2 tsp. freshly ground pepper, plus more, to taste
• 1 chicken, 3 1/2 to 4 lb., cut into 8 serving pieces
• 1/4 cup olive oil
• 2 red or yellow bell peppers, sliced
• 1 yellow onion, halved and sliced
• 4 garlic cloves, minced
• 3/4 cup dry red wine
• 3/4 cup chicken broth
• 1 can (28 oz.) crushed plum tomatoes
• 1 Tbs. dried oregano
• 6 oz. button or cremini mushrooms, sliced