Preheat the oven to 180℃ (350°F), preferably convection/fan, and line a baking tray with parchment paper.
Cut the sweet potato into wedges (if organic, you can leave the skin on). Toss with a little oil and salt in a medium bowl, then spread on the baking tray and bake on the middle rack for 10 minutes.
In the same bowl, crumble the tofu and mix so it picks up the remaining oil and salt. Season with soy sauce, maple syrup, and smoked paprika, and mix well.
Finely chop the lemongrass and set aside.
Remove the tray with the sweet potatoes from the oven and add the tofu. Bake for another 10 minutes.
Wash the salad greens and spin dry.
Warm the pita breads in a pan over medium heat.
When the tofu–sweet potato mixture is done, sprinkle the lemongrass over it and stir.
Place the tofu–sweet potato mixture in the center of the pita, top with peanut sauce and salad, and roll up. Use about 2/3 filling and leave 1/3 of the bread free for rolling.Roll loosely, optionally press briefly in the pan, and enjoy.