Spicy Striped Bass with Carrot Noodles

Name: Spicy Striped Bass with Carrot Noodles
Ingredients: 4 tablespoons unsalted butter, at room temperature; 4 teaspoons harissa; 1 teaspoon finely grated fresh ginger; 1 clove garlic, finely grated; 2 teaspoons fresh lemon juice; Kosher salt; 8 ounces spiralized carrots (about 4 cups); 1 cup canned chickpeas, drained and rinsed; 1/4 cup fresh cilantro, plus more for topping; Freshly ground pepper; 4 skin-on striped bass fillets (about 6 ounces each); 1 cup fresh orange juice (from about 3 oranges)