Beat the 12 eggs, 2 cups sugar and vanilla or lemon extract together. Stir in the ricotta cheese and the chocolate chips. Set aside.
Preheat oven to 325 degrees. Grease two deep dish pie plates.
Combine the flour, baking powder, and 1 cup of the sugar together. Cut in the shortening and mix until the mixture resembles coarse crumbs. Mix in 4 of the eggs and 1 teaspoon of the vanilla. Divide dough into 4 balls and chill (if needed).