The Easiest Cheese and Vegetable Frittata

Name: The Easiest Cheese and Vegetable Frittata
Ingredients: 1 tablespoon olive oil; 1 small red bell pepper, diced; 1/2 small sweet onion, chopped; 1/2 teaspoon kosher salt; 1 small zucchini, quartered lengthwise and sliced crosswise 1/4-inch thick; 3 cups baby spinach, kale, or arugula; 6 fresh basil leaves, coarsely chopped; 6 large eggs; 1/2 cup finely grated Parmesan cheese (1/2 ounce); 1/2 teaspoon freshly ground black pepper; 2 medium scallions, thinly sliced; 3 ounces fresh goat cheese, crumbled