Preheat oven to 375°F (190°C). Prepare muffin tin;
In a large bowl whisk together flour, baking soda, salt, baking powder, cinnamon & allspice.
In another bowl combine oil, brown sugar, vanilla, eggs and pumpkin.
Add to dry ingredients, stirring until just blended.
Gently fold in drained pineapple. Spoon batter into muffin tin and bake for 25 minutes, until golden brown.