Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Press the extra firm tofu with a heavy object for 10 minutes to remove excess moisture, then slice into 1/2-inch cubes.
In a large mixing bowl, combine the tofu cubes, chickpeas, and broccoli florets.
Drizzle the olive oil and tamari over the mixture, then sprinkle with garlic powder, onion powder, sea salt, and black pepper.
Toss everything thoroughly until the vegetables and protein are evenly coated in the seasonings.
Spread the mixture in a single layer on the prepared baking sheet and roast for 25 to 30 minutes, tossing halfway through, until the tofu is golden and the broccoli is tender.
Remove from the oven and immediately sprinkle the warm vegetables and tofu with nutritional yeast.
Transfer to a serving bowl, drizzle with fresh lemon juice, and garnish with hemp hearts for a nutty finish.