Preheat your oven to 350°F (175°C) to ensure even baking and beautiful rise.
In a large mixing bowl, combine the liquid egg whites, Greek yogurt, 4 tablespoons of blue agave, vanilla extract, and a pinch of salt. Whisk until well combined.
Add the coconut flour, cinnamon, and 1/2 cup of the semi-sweet chocolate chips to the wet mixture. Stir gently until just combined, being careful not to overmix.
In a separate bowl, combine the chickpeas, peanut butter, 3 tablespoons of blue agave, and 1 tablespoon of the remaining chocolate chips. Mash and mix until smooth but slightly chunky for texture.
Line your muffin tin with paper liners or grease it lightly. Spoon a small amount of the muffin batter into each cup, filling about one-third full. Add a generous tablespoon of the cookie dough filling in the center, then top with more batter until each cup is about 2/3 full.
Sprinkle the remaining chocolate chips on top of each muffin for an extra chocolatey finish.
Bake for 18-22 minutes, or until muffins are set and a toothpick inserted comes out clean.
Remove muffins from oven and let cool in the pan for 5 minutes. Transfer to a cooling rack. Drizzle additional peanut butter on top if desired before serving.