Preheat oven to 350 degrees
Flour and grease 1 9x5 loaf pan
In a large bowl, blend together flour, baking powder and salt
In another bowl, beat 2 eggs well
Add to the eggs the oil and sugar and blend together well
Add the buttermilk, lemon juice, and lemon zest and blend together well
Add the wet mixture to the dry mixture and fold together until everything is well blended, but don't over-mix
Fold the zucchini into the prepared batter until evenly throughout.
Pour the batter into the prepared loaf pan, pat down the pan with a couple of soft thumps to your counter top to evenly distribute the batter.
Place in your oven and bake for 40 to 45 minutes until a toothpick inserted in the middle comes out clean. (Check at 35 minutes to make sure you don't over bake)
Cool in the pan for 10 minutes and then remove to a wire cooling rack to finish cooling