Preheat your oven to 400 degrees F. Lightly spray a 9×13 baking dish with cooking spray.
Season the chicken generously with salt, pepper, then sprinkle with Italian seasoning and chili flakes.
Add Olive oil or Ghee in a large skillet over medium-high heat. Sear the chicken on both sides until golden brown, about 2-3 minutes per side, then set aside on a plate.
Next, we'll make the creamy sauce. In the same skillet, add 2 tablespoons of oil or ghee, then add garlic and cook until fragrant. Add in chicken broth, oregano, and basil.
Add a bit of water to the greek yogurt to make it is more watery. Then add to the skillet. Bring to a simmer.
Meanwhile, in a small bowl whisk the flour with 2-3 Tbsp water until well combined. Add this mixture to the creamy sauce into the pan.
Continue to simmer until sauce thickens stirring frequently. Taste and season with salt and pepper.
Place the seared chicken into the baking dish, then add potatoes and pour over the sauce.
Bake for 25-30 minutes. or until chicken is cooked through and potatoes are tender. Garnish with fresh chopped herbs and enjoy!