Grilled Mediterranean Salad

Name: Grilled Mediterranean Salad
Ingredients: 1 pound uncooked campanelle pasta; ¼ cup balsamic vinegar; ¾ cup olive oil, divided, plus more for grill grates; 2 teaspoon kosher salt, divided, plus more for water; 2 medium zucchini, trimmed and cut into ¼-in. planks; 2 red bell peppers, halved lengthwise, cored, and seeded; 1 red onion, cut into ½-in. wedges; 8 ounces Halloumi cheese, cut into ½-in. slabs; 2 tablespoons fresh oregano, chopped, plus more for serving; 1 cup chopped roasted almonds, divided