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, patting them dry with a clean towel.
In a large bowl, toss the tofu, chickpeas, broccoli, and bell peppers with olive oil, sea salt, black pepper, and garlic powder.
Spread the mixture in a single layer on the baking sheet.
Roast for 25-30 minutes, tossing halfway through, until the tofu is golden and vegetables are tender.
Remove from the oven and immediately toss with nutritional yeast and lemon juice.
Transfer to a bowl and sprinkle with hemp seeds before serving.