Greek Salad Penne

Name: Greek Salad Penne
Ingredients: Kosher salt; 12 ounces penne pasta (preferably spinach-flavored); 3 tablespoons extra-virgin olive oil, plus more for drizzling; 1 yellow bell pepper, cut into 1/2-inch strips; 1 15-ounce can chickpeas, drained and rinsed; 4 cloves garlic, thinly sliced; 1/4 teaspoon red pepper flakes; 1/2 cup pitted kalamata olives, rinsed and chopped; 5 cups baby arugula (about 3 ounces); 1 tablespoon fresh oregano; Freshly ground pepper; 3/4 cup crumbled feta cheese (about 3 ounces)