Ratatouille Flatbread

Name: Ratatouille Flatbread
Ingredients: 1 cup ricotta cheese; 1 medium zucchini, thinly sliced lengthwise; 1 medium yellow squash, thinly sliced lengthwise; 1 red bell pepper, seeded and quartered; 1/2 small red onion, thinly sliced; 2 tablespoons extra-virgin olive oil, plus more for drizzling; Kosher salt and freshly ground black pepper; Two 8-ounce pieces naan flatbread; 1 teaspoon fresh oregano; 1 teaspoon fresh thyme; 1/2 teaspoon garlic powder; 1/4 cup sun-dried tomatoes; 1/4 cup fresh basil, cut into chiffonade (thin strips); Red pepper flakes, for sprinkling