Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Press the extra firm tofu between paper towels to remove excess moisture, then cut into 1-inch cubes.
In a large mixing bowl, combine the tofu cubes, chickpeas, broccoli florets, and red bell pepper slices.
Drizzle with avocado oil and sprinkle with garlic powder, sea salt, and black pepper, tossing until everything is evenly coated.
Spread the vegetable and tofu mixture in a single layer on the prepared baking sheet and roast for 25 minutes, flipping halfway through, until the tofu is golden and the vegetables are tender.
While the vegetables roast, prepare the dressing by whisking together the tahini, lemon juice, and a tablespoon of warm water in a small bowl until smooth.
Place the chopped kale in a serving bowl and massage it slightly with a drop of lemon juice to soften the leaves.
Top the kale with the roasted tofu and vegetable mixture, then sprinkle with nutritional yeast and hemp hearts.
Drizzle the creamy tahini dressing over the entire bowl and serve immediately.