Whisk together four, cocoa powder, cinnamon, soda, salt & pepper. Set aside. In double boiler, melt together chopped chocolate & butter.** Let cool slightly.
In mixer, combine eggs, sugar, vanilla and chocolate mixture. Beat on medium until combined. On low, gradually add dry ingredients. Fold in chocolate chips.
Use 1 1/2" cookie scoop. Preheat oven to 325°F.
Bake on parchment lined sheets, 2" apart, at 325°F for about 15 minutes. They should look flat with cracked surfaces but soft in texture. Let cool on the parchment on wire racks. Store at room temperature for up to 3 days.
** If melting in microwave, do it gradually, being careful not to let it get too hot.