In large bowl, sift together flour, cocoa, sugar, baking powder, salt, and baking soda. In medium bowl, whisk eggs, melted butter, and milk. Pour liquid ingredients into dry and gently mix until batter is just moistened.

Melt small piece of butter in large non-stick skillet over medium heat. Drop 2 heaping tablespoons batter in hot skillet and spread into 2 1/2 inch disc. Space discs 2 inches apart. Cook until bubbles form over entire top, about 30 seconds. Using heatproof, non-stick spatula, carefully flip pancake and continue to cook until done, 15 to 30 seconds more.

Pour Hershey syrup on top and serve.