Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Drain and rinse the chickpeas, then pat them thoroughly dry with a clean kitchen towel to ensure they crisp up beautifully in the oven.
In a large mixing bowl, combine the dried chickpeas, broccoli florets, and chopped red bell pepper.
Drizzle the olive oil over the mixture and season with garlic powder, sea salt, and black pepper, tossing until everything is evenly coated.
Spread the vegetables and chickpeas in a single layer on the prepared baking sheet, ensuring they aren't overcrowded so they roast rather than steam.
Roast for 20-25 minutes, tossing halfway through, until the chickpeas are golden and the broccoli edges are slightly charred.
Remove from the oven and immediately sprinkle the nutritional yeast over the hot vegetables, tossing well to create a savory, cheesy crust.
In a small bowl, whisk together the Greek yogurt and lemon juice until smooth and spreadable.
To assemble, spread the lemon-yogurt mixture across the bottom of a shallow bowl and pile the roasted vegetables and chickpeas on top.
Finish the bowl with a sprinkle of hemp hearts for an extra boost of plant-based protein and a nutty texture.