1. Preheat the oven to 350°F (175°C) and grease a cake pan.

2. In a large bowl, mix together all-purpose flour, baking soda, baking powder, and cocoa powder.

3. In a separate bowl, whisk together sweetened condensed milk, evaporated milk, fresh lemon juice, pure vanilla extract, and chocolate chips.

4. Combine the wet and dry ingredients until well mixed.

5. Pour the batter into the prepared cake pan and bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.

6. Let the cake cool completely before dusting with a mixture of confectioners sugar and powdered sugar.