In a large bowl, combine the flour, baking powder and salt. In another bowl, combine the eggs, milk and butter; stir into dry ingredients just until moistened. Fold in the feta cheese and chives.
Fill 12 greased or paper-lined muffin cups two-thirds full. Bake at 400° for 18-22 minutes or until a toothpick inserted in the center comes out clean. Cool for 5 minutes before removing from pan to a wire rack. Serve warm. Refrigerate leftovers.
