Chermoula with Orange Zest

Name: Chermoula with Orange Zest
Ingredients: 1 ½ cups (lightly packed) cilantro leaves with tender stems, finely chopped; 1 cup (lightly packed) parsley leaves with tender stems, finely chopped; 1 ½ teaspoons lemon zest, plus 1 1/2 tablespoons juice (or more to taste); 1 ½ teaspoons orange zest, plus 1 tablespoon juice; ¼ cup finely chopped red onion; 2 garlic cloves, finely chopped; 1 tablespoon Champagne vinegar or cider vinegar; 1 ½ teaspoons smoked paprika; 1 teaspoon ground cumin; ⅛ teaspoon cayenne; Kosher salt, to taste; 3 to 6 tablespoons extra-virgin olive oil