Press the tofu using a tofu press or wrap the tofu block in a paper towel and place it between 2 plates with the top weighed down. Press for 15 minutes.
Combine the liquid smoke, maple syrup, soy sauce, lemon juice, nutritional yeast, and garlic powder in a small bowl.
Add the tofu and marinade to a shallow baking dish or sealable plastic bag. Carefully mix to cover all sides of the tofu.
Marinate the tofu for at least 1 hour or overnight in the refrigerator.
Preheat the oven to 425 F (220 C).
Line a baking tray with parchment paper and add the tofu in a single layer to the baking tray.
Bake for 15 minutes until it starts to brown. Flip each piece and bake for 10-15 minutes until brown and firm.
Preheat the air fryer to 375 F (190 C).
Add the tofu in a single layer to the air fryer basket.
Air fry for 10-12 minutes, shaking halfway through.
