Preheat oven to 400°F and line a large baking sheet with parchment paper.
Toss the cubed sweet potato, chickpeas, and cubed tofu with olive oil, garlic powder, smoked paprika, sea salt, and black pepper.
Spread the mixture in a single layer on the baking sheet and roast for 25-30 minutes until the sweet potatoes are tender and tofu is golden.
While roasting, place the chopped kale in a large bowl and massage with lemon juice until the leaves are softened and dark green.
In a small bowl, whisk together the tahini, nutritional yeast, and a splash of warm water until a smooth, pourable consistency forms.
Assemble the bowl by layering the roasted vegetables and tofu over the kale, then drizzling with the creamy tahini sauce.