In a large stockpot over medium heat, cook the bacon until the fat has rendered and the bacon is crisp. Using a slotted spoon, transfer the bacon to paper towels to drain and leave the rendered bacon fat in the stockpot.
Add the chopped yellow onion, carrot, celery with greens and a pinch each of kosher salt and freshly-ground black pepper to the bacon fat and cook until the vegetables have softened, about 5 to 6 minutes. Add the garlic, ground ginger, ground coriander, ground cumin, ground cinnamon, palm sugar and chipotle chilies to the vegetable mixture and sauté for another 3 minutes.
Add the pumpkin puree, vegetable broth and coconut milk, stir, and reduce the heat to medium-low and simmer for 30 minutes.
While the soup is simmering, in a small mixing bowl, combine the Greek yogurt, sour cream, SCHARFFEN BERGER Natural Cocoa Powder and ground wattleseed until well-combined. Cover the bowl and refrigerate to let the flavors blend until ready to serve.
To serve, spoon desired amount of soup into bowls, top with a dollop of cocoa-wattleseed crème and a sprinkling of bacon pieces.