Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
In a large mixing bowl, combine the rinsed chickpeas, cauliflower florets, and broccoli florets.
Drizzle with olive oil and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika, tossing until every piece is evenly coated.
Spread the vegetables and chickpeas in a single layer on the prepared baking sheet and roast for 25 to 30 minutes, or until the vegetables are tender and the chickpeas are slightly crisp.
While the vegetables roast, prepare the protein-rich base by whisking together the non-fat Greek yogurt, lemon juice, and nutritional yeast in a small bowl until smooth.
Spread the yogurt mixture across the bottom of a wide serving bowl.
Pile the warm roasted vegetables and chickpeas directly onto the yogurt base.
Finish the bowl by sprinkling the hemp seeds and freshly chopped parsley over the top for added texture and a bright flavor profile.