Preheat oven to 350 F or 180 C. Lightly oil or baking spray an 8 x 8 baking pan. Set aside until needed.
In a large mixing bowl, whisk together flours, baking powder, salt, Chinese five spice and cinnamon.
Add the sliced pears, chocolate chips and walnuts to dry mix, stirring to coat.*
In another bowl, whisk together the eggs and sugar, before adding the yogurt and oil. Whisk until well mixed.
Add the wet mix into the dry mix, stirring together just until mixed. Do not overmix.
Pour the batter into the prepared pan and bake for 35 to 45 minutes or until a toothpick inserted in the center comes out clean.
Cool in the pan for 10 minutes then remove to a wire rack to finish cooling.