Press the tofu using a tofu press or place the block on a plate with a weighted flat surface on top. Press for 10-15 minutes.
Make the marinade by mixing the lemon juice, nutritional yeast, oregano, salt, and pepper in a shallow bowl or deep plate. Slice the tofu into strips about ¼-inch thick and add them to the marinade. Rub the marinade into all sides of the tofu so it is well-covered. Marinate for at least 30 minutes.
Preheat the oven to 400 F (200 C).
Trim the tops to about 1 inch and the root end from each beet. Scrub them thoroughly, then wrap them in foil. Place them on a baking sheet and bake for 35-40 minutes until they are tender when pierced with a fork.
Slice the cooled beets into bite-sized pieces.
Cut the ends off the oranges, and cut away the remaining peelings. Over a large bowl, cut the orange flesh away from the membranes. Squeeze the empty membranes over the bowl to collect more juice.
Allow 25 minutes to bake the tofu. Line a baking tray with parchment paper and add the tofu to the oven while the beets roast. Flip the tofu halfway through. Alternatively, air fry it at 375 F (195 C) for 10-12 minutes, flipping halfway through.
Open the foil packets and let the beets cool for a few minutes. Then, peel off the remaining skin using your hands or a paper towel. Slice or cube the beets.
To make the salads, divide the arugula, sliced beets, radishes, cherry tomatoes, orange segments, and tofu among 2-4 plates.
Measure ½ cup of the orange juice from the orange segments. Add ¼ teaspoons of Tabasco (or more) and mix well.
Add the dressing right before serving or on the side.