Finely chop the spring onions and chives.
Whisk two eggs in a small bowl. Add half the spring onions and lemon zest and some chopped chives.
Heat a spoonful of oil in a flat frying pan and add the egg mixture, letting it spread out. When the surface is no longer runny, lay two slices of smoked salmon on one side of the omelette. Dust with fresh pepper and lemon zest and drizzle with some lemon juice. You can crumble some cheese on top, if liked.
Scatter half of the rocket leaves on top.
Turn over the other, empty part of the omelette, creating an envelop shape. Cook for a few more seconds, then slide it to a plate and cut it in half.
Make another omelette, repeating the above steps.