Preheat oven to 350°F and press a piece of parchment paper into the bottom of a 9x5 inch loaf pan.
Combine flour, cacao powder, coconut sugar, protein powder, baking powder and salt in a large bowl.
Heat coconut oil in microwave until just melted. Add in the eggs, greek yogurt and vanilla. Whisk until just blended.
Add wet ingredients to dry ingredients and mix until combined. Fold in mini chocolate chips.
Pour batter into lined loaf pan and spread evenly. Bake at 350°F for 20 minutes.
Let cool before cutting into 10 brownies.