In a large bowl, whisk together the flour, baking powder, salt, and herbs.
Add in the buttermilk and melted butter, stirring until a sticky dough forms.
Lightly oil or butter an 8-inch cast iron skillet or round baking pan.
Pour the dough into the skillet and gently press it into an even layer.
Sprinkle with flaky sea salt or extra herbs on top, if desired.
Bake at 400°F (200°C) for 20–25 minutes, until golden and the top springs back.
Let cool slightly, then slice and enjoy warm.