Press-dry tofu, cube, toss in a teaspoon-ish of tasteless oil (enough to make the cornstarch stick), cornstarch and spices.
Put in airfryer so that they're not clumped together. 180C for 10-ish minutes and you should have some tasty crispy cubes of goodness.
If you want to be extra fancy, you can toss them in a sticky sauce of your choosing at this point.
Serve on rice and enjoy.