Whisk the sesame oil, soy sauce, and miso for the tofu in a medium bowl. Tip in the tofu and toss well to coat. Sprinkle over the cornflour and toss again.
Tip the tofu into the air fryer. Cook for 10 minutes at 200℃/400℉, tossing halfway through. Tip into a bowl and set aside.
Whilst the tofu cooks, add all of the dressing ingredients into a blender and blend until smooth. Add extra water if necessary, to loosen.
Add all of the salad ingredients, excluding the sesame seeds and chilli oil, into a large bowl. Drizzle over the dressing and toss well to combine.
Divide the pasta salad between four bowls. Sprinkle over the tofu and toasted sesame seeds, drizzle with chilli oil, and serve.