Baked Cod Shakshuka

Name: Baked Cod Shakshuka
Ingredients: 3 tablespoons extra-virgin olive oil, plus more for drizzling; 1 small yellow onion, halved and thinly sliced; 1 red bell pepper, thinly sliced; 3 garlic cloves, thinly sliced; 1 jalapeno, thinly sliced; 1 teaspoon paprika; 1/8 teaspoon cayenne pepper; 1 teaspoon ground cumin; Kosher salt and freshly ground pepper; 1(28-ounce) can crushed San Marzano tomatoes; 1 to 2 teaspoons sherry vinegar; 4 (6 ounce) cod fillets, skin removed; Parsley, for garnish