Preheat the oven to 400 degrees.
In a large oven-safe skillet, heat the oil over medium heat. Add the onion. Saute for 5 minutes or until soft.
Add the garlic, red pepper, kale, oregano, red pepper flakes, and salt. Saute for 5 minutes or until the kale is wilted.
Add the tomato paste. Saute for 1-2 minutes.
Add the orzo, canned tomatoes, chicken or chickpeas, and broth. Bring to a simmer.
Bake for 10-15 minutes until the orzo is soft.
Finish by stirring in butter, crumbling feta over the top, and dusting with some fresh dill, lemon juice, and freshly ground black pepper.
