Finely dice the onion, carrot, and celery, and mince the garlic cloves.
In a large pot over medium heat, sauté the onion, carrot, and celery with two tablespoons of the vegetable broth for 5 minutes until softened.
Stir in the minced garlic, ground cumin, and smoked paprika, cooking for 1 minute until the spices are fragrant.
Add the dry black lentils, canned chickpeas, and the remaining vegetable broth to the pot.
Bring the mixture to a boil, then reduce the heat to low, cover, and simmer for 25 to 30 minutes until the lentils are tender.
Stir in the chopped kale, nutritional yeast, and hemp hearts, allowing the kale to wilt for 2 minutes.
Season with sea salt and black pepper, then stir in the lemon juice just before serving.