Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Rinse the chickpeas thoroughly in a colander and pat them very dry with a clean kitchen towel to ensure they crisp up during roasting.
In a large mixing bowl, combine the dried chickpeas, cauliflower florets, and chopped red bell pepper.
Drizzle the vegetables with olive oil and sprinkle with smoked paprika, garlic powder, sea salt, and black pepper, tossing until every piece is evenly coated.
Spread the mixture in a single layer on the prepared baking sheet and roast for 25 to 30 minutes, tossing halfway through, until the cauliflower is tender and the chickpeas are golden.
While the vegetables are roasting, whisk together the Greek yogurt, lemon juice, and dried dill in a small bowl until the mixture is smooth and creamy.
Spread the herb-yogurt mixture across the bottom of a wide serving bowl to create a flavorful base.
Pile the hot roasted vegetable and chickpea mixture directly over the yogurt base.
Finish the bowl by evenly sprinkling the hemp hearts and nutritional yeast over the top for a boost of plant-based protein and savory depth.