Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the firm tofu into bite-sized cubes and chop the red bell pepper and zucchini into similar sizes.
In a bowl, toss the tofu and vegetables with olive oil, smoked paprika, sea salt, and black pepper until evenly coated.
Spread the mixture in a single layer on the baking sheet and roast for 20-25 minutes, flipping halfway through, until the tofu is golden and vegetables are tender.
While the vegetables roast, whisk together the Greek yogurt, lemon juice, and garlic powder in a small bowl to create a smooth dressing.
In a large serving bowl, combine the cooked quinoa with the roasted tofu and vegetable mixture.
Gently fold in the yogurt dressing until everything is well combined and creamy.
Sprinkle with hemp seeds for an extra protein boost and serve warm or chilled.