Summer Squash Pasta with Sungold Tomatoes

Name: Summer Squash Pasta with Sungold Tomatoes
Ingredients: 1 pound Sungold tomatoes (about 3 cups ); 2 large yellow squash , sliced into 1/4-inch-thick rounds; 1 small zucchini , sliced into 1/4-inch-thick rounds; 2 tablespoons extra-virgin olive oil , divided; 1 teaspoon Italian seasoning; 1/2 teaspoon salt , divided; 8 ounces fusilli; 1 small sweet onion , chopped (about 1 cup ); 6 cloves garlic , finely chopped; 2 tablespoons lemon juice; 1/4 teaspoon ground pepper , plus more for garnish; 1/2 cup packed fresh mint leaves , plus more for garnish; 1/2 cup grated Parmesan cheese , divided; 2 tablespoons unsalted butter , cubed