Preheat your oven to 375°F (190°C) and line a muffin tin with paper liners.
In a large bowl, combine the flour, baking powder, and salt.
In a separate bowl, whisk together the milk, egg, and melted butter.
Add the wet ingredients to the dry ingredients and stir until just combined.
Fold in the cheese, parsley, chives, and thyme.
Divide the batter evenly among the muffin cups.
Bake for 20-25 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
Let the muffins cool in the pan for 5 minutes before transferring to a wire rack to cool completely.