Preheat oven to 350 degrees F.
Place the chocolate and butter in a large glass bowl set over a pan of simmering water. Stir until melted.
When the chocolate is just melted, remove from the heat and stir to cool.
In a separate bowl, beat the eggs until foamy, then slowly add the sugar. Beat until thickened, about 3 minutes.
Blend in the chocolate, flour, baking powder, cinnamon, salt and vanilla.
Stir in the pecans.
Drop by spoonfuls onto a well-greased or parchment paper lined baking sheet.
Bake for 8 to 10 minutes or until cookies feel firm when lightly touched.
Let sit on pan for 5 minutes, than transfer to rack to cool.