Preheat oven to 400°F and line a large baking sheet with parchment paper.
Press the extra-firm tofu with a heavy object for 10 minutes to remove excess moisture, then cut into 1-inch cubes.
Rinse and pat the canned chickpeas with a clean towel until they are completely dry to ensure maximum crispiness.
In a large mixing bowl, toss the tofu cubes, chickpeas, broccoli florets, and sliced bell peppers with avocado oil, garlic powder, sea salt, and black pepper.
Spread the vegetable and protein mixture in a single layer on the prepared baking sheet.
Roast for 25 minutes, tossing the ingredients halfway through, until the tofu is golden and the chickpeas are crunchy.
Remove from the oven and immediately toss the hot mixture with nutritional yeast until evenly coated.
Transfer to a serving bowl, drizzle with fresh lemon juice, and sprinkle with hemp seeds before enjoying.