Cindi's Jambalaya Cajun Pot Pie

1/4 cup canola oil

1 (16 ounce) package kielbasa sausage, cut into 1 inch pieces

1 pound cooked chicken meat, shredded

2 tablespoons Cajun seasoning, or to taste, divided

2 tablespoons Cajun blackened seasoning, or to taste, divided

1 onion, chopped

3 stalks celery, chopped

1 large green bell pepper, chopped

1/4 cup all-purpose flour

2 quarts chicken broth, or as needed

1 1/2 cups uncooked white rice

1 pound uncooked medium shrimp, peeled and deveined

1 tablespoon ground black pepper, or to taste

1 tablespoon cayenne pepper, or to taste

2 (9 inch) prepared pie crusts

1 beaten egg

What You Need