Press the tofu for 20 minutes using a *tofu press.
In a small bowl, combine cornstarch, salt, garlic powder, onion powder, and white pepper and set aside.
Cut the tofu into 1-inch cubes and add to a mixing bowl.
Add olive oil to to the tofu. Use a silicone spatula or your hands to gently coat the tofu with olive oil.
Add the cornstarch mixture. Use a silicone spatula or your hands to gently coat the tofu with the cornstarch mixture.
If the air fryer you have comes with a crisper plate/tray or something similar, insert it into the air fryer basket. Lightly grease the bottom of the crisper plate or air fryer basket with olive oil or a non-aerosol, propellant-free olive oil spray. Preheat the air fryer for 3 minutes at a temperature of 390° F prior to cooking the tofu.
Add the tofu and air fry at 390° F for 15 minutes until desired crispiness is reached, shaking the basket every 3-5 minutes throughout cooking.
Add Buffalo sauce to a serving bowl. Add the cooked tofu and toss to coat well with the vegan Buffalo sauce. Serve immediately.