Mexican Chicken and Rice Casserole

Name: Mexican Chicken and Rice Casserole
Cuisine: Mexican
Ingredients: 1 tablespoon olive oil; 1 1/4 to 1 1/2 pounds boneless, skinless chicken breasts, (cut into 1-inch pieces); salt and pepper; 1/2 medium yellow onion, (diced); 2 garlic cloves, (minced); 1 (1-ounce) packet taco seasoning; 1 cup uncooked long grain rice; 1 (10.75-ounce) can Rotel tomatoes and green chilies, (undrained); 1 (4-ounce) can diced green chilies; 1 1/2 cups chicken broth; 1 (15-ounce) can black beans, (rinsed and drained); 1 cup frozen corn, (thawed and drained); 2 cups shredded Mexican cheese; Toppings: sliced avocado, chopped fresh cilantro, sour cream, and sliced pickled jalapenos