Baked Penne with Italian Sausage

Name: Baked Penne with Italian Sausage
Ingredients: 1 lb Italian sausage mild, casings removed (about 5 links); 1 large onion chopped; 1 green bell pepper chopped; 2 tbsp tomato paste; 28 oz diced tomatoes canned; 1 cup chicken broth low sodium; 1 tsp oregano dried; 1 tsp basil dried; 1/2 tsp thyme dried; 1/2 tsp fennel seed; 1/2 tsp salt or to taste; 1/2 tsp pepper; 10 oz green peas frozen; 12 oz penne dry (or ziti); 2 cup mozzarella cheese shredded