01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, baking powder, and salt.
03 - In a large bowl, whisk together the sugar, melted coconut oil, pineapple juice, lime juice, lime zest, and vanilla extract until the mixture is completely smooth.
04 - Add the dry ingredients to the wet mixture and stir until just combined, taking care not to overmix.
05 - Gently fold the diced pineapple into the dough.
06 - Scoop out tablespoon-sized portions, roll them into balls, and roll each in the reserved sugar to coat.
07 - Place dough balls 2 inches apart on the prepared baking sheets and gently flatten with your palm.
08 - Bake for 11 to 13 minutes, until edges are set and just turning golden.
09 - Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.