Preheat oven to 400°F and line a large baking sheet with parchment paper.
Cut the tempeh into bite-sized cubes and drain the chickpeas well.
In a large bowl, toss the tempeh, chickpeas, and broccoli florets with olive oil, sea salt, black pepper, garlic powder, and nutritional yeast.
Spread the mixture in a single layer on the prepared baking sheet and roast for 20-25 minutes until the chickpeas are slightly crispy.
While the vegetables roast, prepare the quinoa by simmering in water or vegetable broth until fluffy.
In a small jar, whisk together the tahini and lemon juice, adding a teaspoon of warm water at a time until a pourable consistency is reached.
Scoop the cooked quinoa into a bowl, top with the roasted vegetable and tempeh mixture, and finish with the creamy tahini dressing.