Preheat the oven to 350 degrees.

In a large bowl, whisk together the flour, baking powder and salt.

Stir in the sugar, cinnamon, and lemon zest.

Make a well in the center and add the oil and eggs. Mix well with a fork, and use your hands at the end to incorporate all the flour.

Line a cookie sheet with parchment paper.

On a plate, mix together the extra sugar and cinnamon for rolling. Take a spoonful of dough and shape into a ball with your hands. (The balls of dough should be no more than 1-inch in diameter.) Roll each ball into the cinnamon-sugar mixture and place on baking sheet.

Flatten the balls slightly before baking.

Bake for about 20 minutes or until they turn golden brown on the edges.

Cool on a wire rack.