Orzo Salad with Grape Tomatoes and Radishes

Name: Orzo Salad with Grape Tomatoes and Radishes
Ingredients: 1 pound orzo; 1 1/2 cups grape tomatoes, halved or quartered; 1 small English cucumber, diced (about 3 cups); 1 bunch radishes, sliced (about 1 cup); 1 cup Kalamata olives, pitted and halved; 5 ounces goat cheese, crumbled; 2 tablespoons chopped fresh basil; 2 tablespoons chopped fresh mint; 2 tablespoons chopped fresh flat-leaf parsley; 1/2 cup pepitas, toasted (see Cook's Note); 1 shallot, finely minced (about 2 1/2 tablespoons); 1 tablespoon Dijon mustard; 3 tablespoons freshly squeezed lemon juice (from 1 to 1 1/2 lemons); 1/2 cup extra-virgin olive oil; Kosher salt and freshly ground black pepper