Nutritional yeast is great for scrambled tofu. You can of course season scrambled tofu however you like, but for one block of tofu (quite forgiving in terms of quantities, I think this will work well for anywhere between 200g to 400g of firm or extra-firm tofu) I do:

• Generous bunch of nutritional yeast. Like a good pinch between all of your fingertips.
• 1 tsp ground cumin
• 1/4 tsp ground turmeric
• 1/4 tsp ground black pepper (you can up it to 1/2 tsp if you prefer; I used to do 1/2 tsp then I think I got oversensitive to it so halved it)
• sprinkle of salt
• Add dried parsley at the end as a garnish

Keep in mind I don't make any attempt to make mine taste like eggs. If you want scrambled tofu as an egg substitute then you could leave out the cumin (which gives it a more curry flavour) and add stuff like garlic powder, onion powder, and black rock salt at the end (add black rock salt at the very end when it's off the heat, otherwise it will lose its eggy flavour). But personally I prefer a more curry flavour than an eggy flavour!

Nutritional yeast also works well to top avocado toast with. I do toasted sourdough, smashed avocado mixed with lemon juice, nutritional yeast sprinkled on top, then toasted sesame seeds sprinkled on top of that.