5050 Pesto Spaghetti

Name: 50/50 Pesto Spaghetti
Ingredients: 4 tbsp. extra-virgin olive oil, divided; 2 tbsp. unsalted butter, melted; 4 oz. cherry tomatoes; 3 cloves garlic; 3 thyme sprigs; 6 oz. dry spaghetti; 2 medium zucchini, ends trimmed and peeled with a julienne peeler; 2 4-oz. boneless salmon fillets; 0.25 c. store-bought basil pesto