Spaghetti with Sicilian Pesto

Name: Spaghetti with Sicilian Pesto
Ingredients: 1 red bell pepper; 1 ½ pounds tomatoes (5 medium), cored and quartered; 5 anchovies, rinsed and patted dry; 3 tablespoons capers, rinsed and drained; 2 tablespoons golden raisins; ⅓ cup toasted blanched almonds, plus more, chopped, for serving; 2 ½ ounces Parmesan, grated, plus more for serving; ¼ cup extra-virgin olive oil, plus more for drizzling; Coarse salt and freshly ground pepper; 1 pound spaghetti; Fresh flat-leaf parsley leaves, for serving