Preheat your oven to 325°F (165°C) and line a large baking sheet with parchment paper.
Finely mince the fresh mint leaves until they are almost a paste to ensure the flavor is evenly distributed without a leafy texture.
Melt the coconut oil in a small bowl and stir in the minced mint, letting it sit for two minutes to infuse the natural oils.
In a medium mixing bowl, whisk together the chocolate protein powder, almond flour, cocoa powder, baking powder, and sea salt.
Add the mint-infused coconut oil and the egg white to the dry ingredients, stirring until a thick, stiff dough forms.
Place the dough between two sheets of parchment paper and roll it out until it is approximately 1/8-inch thick.
Use a small round cookie cutter or the rim of a shot glass to cut out circles and place them on the prepared baking sheet.
Bake for 10 to 12 minutes until the edges are firm, then turn off the oven and leave the cookies inside for an additional 5 minutes to enhance the crunch.
Transfer the cookies to a wire rack and allow them to cool completely, as they will continue to crisp up as they reach room temperature.