In a large soup pot, heat the olive oil over medium-high heat. Add the onion, carrots, and celery. Saute for 3 minutes.
Add the bell pepper, portobello mushrooms, garlic, chopped basil stems, coriander seeds, and crushed red pepper. Saute for 2 minutes.
Add the sweet potato, water, and vegetable bullion. Bring to a boil and reduce to a simmer.
In a bowl, mash 1 can of the chickpeas and leave the other can whole. Add to the soup.
When the sweet potatoes are cooked through, add the chopped kale and season taste with salt and pepper.
Serve in warmed bowls and garnish with toasted pepitas and fresh basil.