Preheat the oven to 400 degrees F. In a large bowl, combine flour, baking powder, and salt.
Stir in honey, cream, and calamansi zest. Mix everything with a wooden spoon until the dough just starts to come together as a shaggy and sticky mass. Turn it out onto a floured surface. Knead it briefly just to bring the dough together. Add more flour sparingly if the dough is too sticky.
Shape it into an 8-inch circle. Brush with melted butter and sprinkle with sugar. Cut the circle into 8 wedges and place the wedges 1 inch apart on a baking sheet lined with parchment paper. Bake for 15 to 20 minutes or until golden brown.
Make the Calamansi Glaze: Add powdered sugar in a small bowl. Pour the calamansi juice and stir until the glaze is smooth. The glaze should be thick but still pourable. You can adjust the consistency by adding more sugar or calamansi juice.