Preheat oven to 400°F. Line a large rimmed baking pan with parchment paper. Place sweet potatoes and onion on the prepared pan; drizzle with 1 tablespoon of the oil and toss to coat. Sprinkle with salt and black pepper; toss to combine. Spread in a single layer. Bake until sweet potatoes are tender, 20 to 25 minutes. Let cool slightly.
Meanwhile, in a medium skillet, heat remaining 1 tablespoon of the oil. Add the chorizo and cook, stirring occasionally, until heated through, about 5 minutes.
In a high-speed blender or food processor, place sweet potatoes, onion, apple, ginger, and 2 cups of the broth. Cover and pulse several times. Add remaining broth to blender along with nutritional yeast, smoked paprika, cumin, cinnamon, and salt. Process until smooth. Transfer soup to pot or large saucepan. Add the chorizo and cook over medium heat, stirring occasionally, until heated through, 5 to 8 minutes. (If using a food processor, before adding the chorizo use an immersion blender to blend until smooth.)
In a small bowl, use an immersion blender or whisk to blend coconut cream. Ladle servings into bowls, and drizzle servings with coconut cream, and top with roasted pepitas.