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

In a mixing bowl, whisk together the dry ingredients: flour, baking soda, baking powder, and salt.

In another bowl, combine the wet ingredients: mashed pineapple, sugar, vegetable oil, eggs, and vanilla extract.

Pour the wet mixture into the dry ingredients and stir until just combined.

Pour the batter into the prepared loaf pan.

Bake in the preheated oven for 55-60 minutes, or until a toothpick inserted into the center comes out clean.

Allow the bread to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.