Preheat oven to 350°F
If you have a tofu press, add tofu to the press and let sit. If not, then wrap the tofu in some paper towel or a kitchen towel. Place on a plate with something heavy on top to help press out the water.
Let sit for at least 30 minutes. Drain and pat dry.
Cut the block into about 3/8" slices across the narrow side and then cut each of these slices into three squares.
Shake the garlic powder and salt and pepper over the tofu and mix to distribute.
Place the tofu squares on a parchment lined baking sheet and into the oven for about 20 minutes.