Spaghetti With Turkey Meat Sauce

1 lb ground turkey, lean
1 can (28 oz) tomatoes, cut up
1 C green pepper, finely chopped
1 C onion, finely chopped
2 cloves garlic, minced
1 tsp dried oregano, crushed
1 tsp black pepper
1 lb spaghetti, uncooked
as needed nonstick cooking spray