Spicy Tomato Sauce with Sopressata and Charred Zucchini

Name: Spicy Tomato Sauce with Sopressata and Charred Zucchini
Ingredients: 3 Tablespoons olive oil, plus more for brushing the zucchini; 3 Tablespoons tomato paste; 1 Cup sopressata, cut into quarters; 1 zucchini, cut into 1-inch discs; Salt, to taste; 1 Ounce canned crushed tomato, preferably organic; 1 ripe tomato, diced; Juice of 1 large lemon; 2 Tablespoons Sriracha