Beat the eggs in a large bowl until frothy.
Add the Greek yogurt and beat until the mixture is smooth, with no lumps.
Add the maple syrup, lemon zest and juice, ginger and pineapple juice, and stir until blended.
Add the flour, salt, and crushed pineapple, beating until thoroughly combined.
Pour the mixture over the crust, and bake in the oven until set, or about 30 minutes.
Allow the bars to cool for at least 2 hours in the fridge before cutting.
Dust with powdered sugar.