Preheat oven to 400°F and line a large baking sheet with parchment paper.
Press the tofu to remove excess moisture, then cut into 1/2-inch cubes.
Rinse and drain the chickpeas, then pat them dry thoroughly with a clean towel.
Place the tofu cubes, chickpeas, broccoli florets, and sliced bell peppers on the baking sheet.
Drizzle with olive oil and sprinkle with garlic powder, smoked paprika, sea salt, and black pepper.
Toss everything until evenly coated and spread into a single layer.
Roast for 25-30 minutes, tossing halfway through, until the tofu is golden and vegetables are tender.
Transfer the roasted mixture to a serving bowl and drizzle with fresh lemon juice.
Sprinkle with nutritional yeast and hemp hearts before serving warm.