Pimiento Mac and Cheese

Name: Pimiento Mac and Cheese
Ingredients: 1 7- to 8-ounce red bell pepper, seeded, cut into 1-inch pieces; 2 garlic cloves, halved, divided; 1 /2 cup panko (Japanese breadcrumbs); 3 tablespoons unsalted butter, room temperature, divided; 1 /2 cup freshly grated Parmesan cheese, divided; 3 /4 cup drained mild Peppadew peppers in brine, 1 tablespoon brine reserved; 1 /4 teaspoon ground ancho chiles; 1 1/4 cups (packed) coarsely grated extra-sharp cheddar cheese; 1 cup (packed) coarsely grated whole-milk mozzarella; 8 ounces medium shell pasta or gemelli