Sift flour, sugar, and cocoa powder together in a mixing bowl and stir until blended.
Place butter in a microwave-safe bowl and heat in the microwave until just melted, about 30 seconds. Add milk and return to the microwave until just warmed but not steaming hot, about 30 seconds more. Beat with a fork to blend butter and milk. Add 1 egg at a time and mix until well blended. Add to the bowl with the flour mixture and mix well. Fold in chocolate chips.
Heat a nonstick skillet over medium heat. Pour tablespoons of batter into the skillet and spread evenly. Cook for about 1 minute, watching carefully to prevent burning. Flip and cook until lightly browned, about 1 minute more. Serve hot.
