Gulf Coast Jambalaya Rice Recipe

1 pound boneless skinless chicken breasts, cut into 1-inch cubes 1 pound smoked kielbasa, cut into 1/4-inch slices 2 cups chicken stock 1 large green pepper, chopped 1 cup chopped sweet onion 2 celery ribs, chopped 2 garlic cloves, minced 2 teaspoons Creole seasoning 1 teaspoon seafood seasoning 1 teaspoon pepper 1 pound uncooked medium shrimp, peeled and deveined 2 cups uncooked instant rice