Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Press the firm tofu between paper towels to remove excess moisture, then cut into half-inch cubes.
In a large bowl, combine the tofu cubes, chickpeas, broccoli, and red bell pepper.
Drizzle with olive oil and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika, tossing to coat evenly.
Spread the mixture in a single layer on the baking sheet and roast for 25 minutes until the vegetables are tender and tofu is golden.
While roasting, whisk together the Greek yogurt, tahini, and lemon juice in a small bowl to create the dressing.
To assemble, place the cooked quinoa in a bowl, top with the roasted vegetable and protein mix, and sprinkle with nutritional yeast.
Finish by drizzling the creamy yogurt-tahini sauce over the top before serving.