Preheat your oven to 350°F (175°C). Line a large baking sheet with a piece of parchment paper.
In a medium-sized bowl, whisk together the all-purpose flour, baking powder, and salt. Set aside.
In a large mixing bowl, whisk the eggs, granulated sugar, light brown sugar, melted butter, and vanilla extract together until completely smooth and well combined.
Gradually pour the dry flour mixture into the wet ingredients. Use a sturdy wooden spoon or rubber spatula to mix until a slightly sticky dough forms.
Gently fold in the mini chocolate chips, making sure they are evenly distributed throughout the dough.
Turn the dough out onto a lightly floured work surface. Divide it equally into two halves. Shape each half into a log measuring about 9 inches long and 2.5 inches wide. Place them on the prepared baking sheet, leaving at least 3 inches of space between them.
Bake for 25 minutes, or until the logs are firm and the edges begin to turn lightly golden.
Remove from the oven and let the logs cool on the baking sheet for exactly 10 to 15 minutes. Reduce your oven temperature to 325°F (165°C).
Carefully transfer the slightly cooled logs to a cutting board. Using a sharp serrated knife, slice the logs straight across or on a slight diagonal into 3/4-inch thick slices. Press firmly but gently to cut through the chocolate chips without crumbling the dough.
Arrange the slices cut-side down on the baking sheet. Bake for 8-10 minutes, flip each slice over, and bake for an additional 8-10 minutes until completely dry and crispy. Let them cool entirely on a wire rack before serving.