Jambalaya

Name: Jambalaya
Ingredients: 2 tbsp. olive oil; 8 oz. boneless, skinless chicken breasts; kosher salt; Pepper; 6 oz. fully cooked andouille sausage; 1 medium onion; 2 stalk celery; 1 red pepper; 2 clove garlic; 2 tsp. Cajun seasoning; 1½ c. low-sodium chicken broth; 1 can petite diced tomatoes with green chiles; 1 c. long-grain white rice; 8 oz. peeled and deveined shrimp; 2 scallions