Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Rinse and drain the chickpeas, then pat them thoroughly dry with a clean kitchen towel to ensure they get crispy.
Place the chickpeas, broccoli florets, and cauliflower florets on the baking sheet.
Drizzle with olive oil and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika, tossing well to coat evenly.
Roast in the oven for 20 to 25 minutes, tossing halfway through, until the vegetables are tender and the chickpeas are slightly golden.
While the vegetables roast, prepare the dressing by whisking together the Greek yogurt, lemon juice, and nutritional yeast in a small bowl until smooth.
Place the fresh baby spinach in a large serving bowl as your base.
Top the spinach with the roasted vegetable and chickpea mixture.
Drizzle the lemon-yogurt dressing over the bowl and finish by sprinkling the hemp hearts on top for added texture and protein.