Pasta - butter and pepper, or cacio e pepe
Eggs - scrambled eggs are not my easy eggs (stirring gently takes a while!) - but fried eggs are quick. Omelette somewhere in between. Chawanmushi was a favorite for a while, felt more special than a fried egg with not much more work.
Toast! Anything on top… cheese, ham, marmite, tinned sardines, and so on.
Anda (egg) paratha - beat an egg with salt and chilli powder, pour onto an oiled fry pan. When it’s half set, top with paratha or tortilla and press down to spread the egg. Flip to crisp a bit. Sprinkle some chaat masala or chilli powder and a squeeze of lime. Some quick-picked onions are great too. Roll up or fold (egg side in) and tuck in. Whole thing takes 5 mins. A more elaborate version of this is to roll up some leftover kababs or vegetables or paneer in the egg paratha - called a kathi roll or frankie.
Salmon is remarkably quick - my meal yesterday took maybe 15 mins - the salmon only needed 5, the sweet potato took 5-7 mins in the PC, and the sauce came together in the meantime (and could have been skipped and replaced by ready zhoug or hot sauce or salsa).