Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Press the extra firm tofu between paper towels to remove excess moisture, then slice into half-inch cubes.
Rinse the canned chickpeas thoroughly and pat them completely dry using a clean kitchen towel to ensure they crisp up.
In a large bowl, toss the tofu, chickpeas, broccoli florets, and sliced bell peppers with olive oil, sea salt, black pepper, and garlic powder.
Spread the seasoned mixture in a single layer on the prepared baking sheet and roast for 20 to 25 minutes until the tofu is golden and vegetables are tender.
While roasting, whisk together the tahini, lemon juice, and nutritional yeast in a small jar, adding a teaspoon of warm water at a time until it reaches a pourable consistency.
Place the warm, cooked quinoa into a serving bowl and top with the roasted vegetable and protein medley.
Sprinkle the hemp seeds over the top and finish with a generous drizzle of the lemon-tahini dressing before serving.