Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Press the firm tofu between paper towels with a heavy plate on top for 10 minutes to remove excess moisture, then cut into half-inch cubes.
In a large mixing bowl, combine the tofu cubes, chickpeas, and broccoli florets with the olive oil, garlic powder, sea salt, and black pepper until evenly coated.
Spread the vegetable and protein mixture in a single layer on the prepared baking sheet and roast for 25 to 30 minutes, tossing halfway through, until the tofu is golden.
While the bowl base roasts, whisk together the tahini, lemon juice, and nutritional yeast in a small jar, adding one tablespoon of warm water at a time until the sauce is smooth and pourable.
Divide the roasted mixture into bowls, drizzle with the savory tahini dressing, and finish with a sprinkle of hemp seeds for added texture.