Preheat the oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Drain and rinse the chickpeas, then pat them very dry with a clean kitchen towel to ensure they get crispy.
On the baking sheet, combine the broccoli florets, cauliflower florets, and dried chickpeas.
Drizzle with extra virgin olive oil and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika; toss until evenly coated.
Roast in the oven for 20-25 minutes, tossing halfway through, until the vegetables are tender and the chickpeas are golden.
While the vegetables roast, combine the dry quinoa and 0.5 cup water in a small pot; bring to a boil, then simmer covered for 12 minutes.
In a small mixing bowl, whisk together the non-fat plain Greek yogurt, lemon juice, and chopped fresh parsley to create a creamy dressing.
Transfer the cooked quinoa to a serving bowl, top with the roasted vegetable and chickpea mixture, and sprinkle with hemp hearts.
Finish with a generous drizzle of the lemon-parsley yogurt sauce before serving.