Preheat oven to 350 degrees. Sift together flour, baking powder, baking soda and salt. Mix butter, sugar and egg together until creamy. Add dry ingredients to wet ingredients and mix. Mix in pineapple. Drop by teaspoons on an ungreased cookie sheet. Mix nutmeg and sugar together and sprinkle on top of each cookie. Bake for 10 minutes, or until golden brown.