Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Drain and rinse the chickpeas, then pat them completely dry with a clean kitchen towel to ensure they get crispy.
Press the extra firm tofu to remove excess moisture and cut into 1/2-inch cubes.
In a large bowl, toss the chickpeas, tofu cubes, and broccoli florets with olive oil, sea salt, black pepper, and garlic powder until 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 chickpeas are crisp.
While the vegetables roast, whisk together the Greek yogurt, tahini, lemon juice, and nutritional yeast in a small bowl until smooth.
Transfer the roasted vegetable and protein mixture to a serving bowl.
Drizzle with the creamy lemon-tahini dressing and garnish with hemp seeds before serving.