Mac and Corn Cheese

Name: Mac and Corn Cheese
Ingredients: 1 pound uncooked short pasta (such as gemelli, cavatappi, or rigatoni); 2 tablespoons olive oil , divided; 3 cups fresh yellow corn kernels (from 4 ears fresh corn); 3/4 cup seeded (if desired) and finely chopped jalapeño chiles (about 4 large chiles), divided; 3/4 cup panko; 2/3 cup thinly sliced red onion , divided; 2 1/2 teaspoons kosher salt , divided, plus more to taste; 1/2 teaspoon black pepper , divided; 11 ounces (about 2 3/4 cups) shredded low-moisture mozzarella cheese , divided; 2 tablespoons unsalted butter; 2 tablespoons all-purpose flour; 3 1/4 cups whole milk; 3 tablespoons mayonnaise; 1/8 teaspoon granulated sugar