Instant Pot Rigatoni with Tomatoes and Pancetta

Name: Instant Pot Rigatoni with Tomatoes and Pancetta
Ingredients: 4 ounces pancetta , chopped fine; 1 onion , chopped fine; 1/4 teaspoon table salt; 3 garlic cloves , minced; 2 anchovy fillets , rinsed, patted dry, and minced; 2 teaspoons fennel seeds , lightly cracked; 1/4 teaspoon red pepper flakes; 1 (28-ounce) can diced tomatoes; 2 cups chicken broth; 1 1/2 cups water; 1 pound rigatoni; 1/4 cup grated Pecorino Romano cheese , plus extra for serving; 2 tablespoons minced fresh parsley