Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Rinse the chickpeas and pat them thoroughly dry with a clean kitchen towel to ensure maximum crispiness.
In a large bowl, toss the chickpeas, broccoli florets, and diced bell pepper with the olive oil, garlic powder, sea salt, and black pepper.
Spread the vegetable and chickpea mixture in a single layer on the prepared baking sheet.
Roast for 20 to 25 minutes, tossing halfway through, until the broccoli is tender and the chickpeas are golden brown.
Remove from the oven and immediately sprinkle the nutritional yeast over the hot vegetables, tossing to coat evenly.
In a small bowl, whisk together the non-fat Greek yogurt and lemon juice until smooth and creamy.
Spread the lemon-yogurt mixture at the bottom of a serving bowl, top with the roasted vegetables and chickpeas, and finish by sprinkling with hemp hearts.