RWOP Finalist: Tantalizing Tilapia Recipe

Name: RWOP Finalist: Tantalizing Tilapia Recipe
Ingredients: 2 tsp blackened seasoning; 1 tsp lemon pepper seasoning; 1 tsp garlic powder; 1 tsp gumbo file powder; 2 tsp cajun gumbo seasoning mix, divided; 2 tsp ground red pepper ( cayenne), divided; 6 tilapia fillets; 1 cup butter, divided; 3 cloves garlic, chopped; 1/2 cup sliced green onions; 1/2 cup sliced portobello mushrooms; 1/2 cup condensed cream of celery soup; 1 (8 oz) package philadelphia cream cheese; 1/2 cup heavy cream; 3 tsp parsley flakes, divided; 1 lb uncooked deveined peeled medium shrimp; 1/2 cup shredded mozzarella cheese