For a weeknight, start the tomatoes marinating before you go to work.
Combine tomatoes, 1/4 cup oil, garlic, and 2 teaspoons salt in a large bowl, and then season with pepper. Let stand at room temperature until tomatoes exude juices, at least 2 hours and up to 8 hours.
Preheat oven to 450 degrees. Toss breadcrumbs and parsley with remaining 2 tablespoons oil; season with salt and pepper. Spread mixture in a single layer on a rimmed baking sheet and toast, stirring halfway through, until parsley is crisp and breadcrumbs are toasted, about 8 minutes.
Meanwhile, bring a large pot of generously salted water to a boil. Add pasta and cook until al dente; drain. Stir pasta into tomato mixture, and season with salt and pepper. Top with breadcrumbs, cheese, and a drizzle of oil.