Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Press the firm tofu between paper towels to remove excess moisture, then cut into 1/2-inch uniform cubes.
In a large mixing bowl, combine the tofu cubes, chickpeas, broccoli, and cauliflower.
Drizzle with avocado oil and sprinkle with smoked paprika, garlic powder, sea salt, and black pepper, tossing until everything is evenly coated.
Spread the mixture in a single layer on the prepared baking sheet and roast for 25-30 minutes, tossing halfway through, until the tofu is golden and the vegetables are tender.
While the vegetables roast, whisk together the tahini, lemon juice, and nutritional yeast in a small bowl, adding 1-2 tablespoons of warm water to reach a smooth, pourable consistency.
Steam the chopped kale in a steamer basket or a small pot with a splash of water for 2-3 minutes until wilted and bright green.
Divide the steamed kale between bowls, top with the roasted tofu and vegetable mixture, sprinkle with hemp seeds, and finish with a generous drizzle of the tahini sauce.