Campanelle Pasta Salad

Name: Campanelle Pasta Salad
Ingredients: 1 pound campanelle pasta; 1/4 cup extra-virgin olive oil, plus 1/4 cup; 1 small or 1/2 medium red onion, chopped; 2 cloves garlic, minced; 1 (6-ounce) can Italian tuna in oil, such as Flott, drained; 1 pint (2 cups) cherry tomatoes, halved; 8 ounces frozen artichoke hearts, thawed and quartered; 2 tablespoons capers, rinsed and drained; 2 tablespoons chopped fresh thyme leaves; 1/4 cup chopped fresh flat-leaf parsley; Kosher salt and freshly ground black pepper