Cook orzo according to package directions
Meanwhile, heat olive oil over medium heat in a large skillet. Add ground turkey, sprinkle with kosher salt and pepper, and cook until browned.
Add red bell pepper, oregano, and garlic and cook until peppers begin to soften and turkey is cooked through.
Add spinach and stir until wilted if fresh, or until heated through if frozen.
Stir in drained orzo.
Serve topped with kalamata olives, feta cheese, and pepperoncini peppers.