Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Drain the extra firm tofu and press it firmly between paper towels to remove as much moisture as possible, then cut into 1-inch cubes.
In a large mixing bowl, combine the tofu cubes, chickpeas, and broccoli florets.
Drizzle with avocado oil and sprinkle with garlic powder, onion powder, sea salt, and black pepper, tossing well to coat everything evenly.
Spread the mixture in a single layer on the prepared baking sheet and roast for 20 to 25 minutes, flipping halfway through, until the tofu is golden and the broccoli is tender.
While the vegetables roast, prepare the dressing by whisking together the tahini, nutritional yeast, lemon juice, and water in a small bowl until smooth.
Transfer the roasted tofu and vegetable mixture to a serving bowl, drizzle with the tahini dressing, and garnish with hemp seeds for extra texture.