Preheat an oven to 350 degrees F (175 degrees C). Grease and flour a 10 inch springform pan.
Use an electric mixer to beat the eggs, applesauce, molasses, and butter in a large bowl. Beat in the cake mix along with the cinnamon, nutmeg, cloves, and orange peel. Mix on medium speed for 4 minutes. Pour batter into prepared pan. Top the unbaked cake with pear slices; sprinkle evenly with the pecans and chopped chocolate.
Bake in preheated oven until a toothpick inserted in the center comes out clean, about 55 to 60 minutes. Cool for 25 minutes before removing from pan.