In a medium mixing bowl, beat eggs well. Add in sugar, lemon juice and lemon zest.
Fold in flour and baking powder.
Pour/spread lemony egg mixture evenly onto hot crust.
Bake an additional 25 minutes at 325° until bars are just turning golden.
Remove from oven and cool completely.
Cut bars into large squares and then in half into triangles.
Dust lightly with powdered sugar.