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 excess moisture, then cut into 1-inch cubes.
In a large bowl, toss the tofu cubes and broccoli florets with avocado oil, garlic powder, sea salt, and black pepper until evenly coated.
Spread the tofu and broccoli in a single layer on the prepared baking sheet and roast for 20-25 minutes, flipping halfway through, until the tofu is golden and the broccoli edges are crispy.
While the vegetables roast, prepare the dressing by whisking together the tahini, nutritional yeast, lemon juice, and water in a small bowl until smooth and pourable.
Assemble the Buddha bowl by placing the cooked quinoa and chickpeas at the base of the bowl.
Top with the roasted tofu and broccoli, then drizzle the creamy tahini dressing over the entire bowl.
Finish by garnishing with hemp hearts for an extra boost of plant-based protein and a light crunch.