Preheat oven to 400 degrees F (200 degrees C). Grease 12 muffin cups or line with paper muffin liners.
Combine flour, sugar, 3/4 cup chocolate chips, cocoa powder, and baking soda in a large bowl. ...
Bake in preheated oven until a toothpick inserted into the center comes out clean, about 20 minutes.