Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Press the extra firm tofu for at least 15 minutes to remove excess moisture, then slice into 1-inch uniform cubes.
In a large mixing bowl, whisk together the coconut aminos, lemon juice, garlic powder, and extra virgin olive oil.
Add the tofu cubes, broccoli florets, and sliced bell peppers to the bowl, tossing gently until everything is evenly coated in the marinade.
Sprinkle the nutritional yeast, sea salt, and black pepper over the mixture, tossing again to ensure the tofu is well-crusted.
Spread the tofu and vegetables in a single layer on the prepared baking sheet, ensuring they are not overcrowded to allow for proper roasting.
Bake for 25 to 30 minutes, flipping the tofu and tossing the vegetables halfway through, until the tofu is golden and the vegetables are tender.