Preheat oven to 350°F
Line the bottoms of 2 spring-form pans with parchment paper and spray the sides with cooking spray
In a bowl, whisk together flour, baking powder, baking soda, salt, cinnamon, and nutmeg, set aside
In a mixer, Beat together eggs, sugar, oil, milk, and lemon juice until blended.
Add dry ingredients and beat until well blended.
Fold in carrots and pineapple.
Pour batter evenly into the 2 prepared pans
Bake for 30-35 minutes or until baked through. A toothpick inserted in centre should come out clean.
Cool in pan for 5 minutes, then remove from pan and cool completely before frosting. (see notes below)