Preheat your oven to 400°F (200°C) and line a large rimmed 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 1/2-inch cubes.
Rinse and drain the chickpeas, then pat them dry with a clean kitchen towel to ensure they get crispy in the oven.
Place the tofu cubes, chickpeas, and broccoli florets on the prepared baking sheet and drizzle with olive oil, sea salt, and black pepper.
Toss the vegetables and protein until evenly coated, spreading them out in a single layer to ensure even roasting.
Roast for 20-25 minutes, tossing halfway through, until the tofu is golden and the broccoli edges are slightly charred.
In a small mixing bowl, whisk together the Greek yogurt, lemon juice, and garlic powder until the dressing is smooth and creamy.
Divide the warm cooked quinoa into serving bowls and top with the roasted tofu, chickpeas, and broccoli.
Finish the bowl by drizzling the lemon-yogurt sauce over the top and serve immediately.