Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Place the chickpeas, bell pepper, zucchini, and red onion on the prepared baking sheet.
Drizzle the vegetables and chickpeas with olive oil and sprinkle with sea salt, black pepper, and garlic powder.
Toss everything together until evenly coated, then spread into a single layer.
Roast for 20 to 25 minutes, tossing halfway through, until the vegetables are tender and the chickpeas are slightly crisp.
While the vegetables roast, whisk together the non-fat Greek yogurt and lemon juice in a small bowl until smooth and creamy.
Spread the lemon yogurt mixture across the bottom of a wide serving bowl to create a base.
Top the yogurt with the roasted vegetable and chickpea mixture, then garnish with hemp seeds and fresh parsley.