01 - In a medium bowl, whisk together the flour, baking powder, and salt until well combined.
02 - In a large bowl, beat the butter and sugar until light and fluffy, approximately 2-3 minutes. Add the egg, vanilla extract, and almond extract, mixing until fully incorporated.
03 - Gradually add the dry ingredients to the wet mixture, mixing on low speed until a soft, uniform dough forms. Be careful not to overmix.
04 - Divide the dough into two portions: one larger portion (about 2/3) and one smaller portion (about 1/3). Tint the larger portion with red food coloring, kneading until the color is evenly distributed throughout. Tint the smaller portion with green food coloring in the same manner.
05 - Roll the red dough into a log approximately 10 inches long and 2 inches in diameter. On a lightly floured surface, roll out the green dough into a rectangle large enough to completely wrap around the red log. Carefully wrap the green dough around the red log, pressing gently along the seam to adhere the layers together.
06 - Wrap the combined dough log tightly in plastic wrap and refrigerate for at least 1 hour, or until firm enough to slice cleanly.
07 - Preheat the oven to 350°F. Line baking sheets with parchment paper and set aside.
08 - Remove the chilled dough log from the refrigerator and unwrap. Slice the dough into rounds about 1/4-inch thick. Cut each round in half to form watermelon slice shapes.
09 - Place each cookie slice on the prepared baking sheets, leaving about 1 inch between cookies. Press a few mini chocolate chips into the red portion of each slice to mimic watermelon seeds.
10 - Bake for 8-10 minutes, or until the cookies are set and lightly golden around the edges but not browned. Cool on the baking sheet for 2-3 minutes before transferring to a wire rack to cool completely.