Step #1 Rinse zucchini, trim & discard ends, & shred.
Step #2 In a 10- to 12-inch nonstick frying pan over high heat, onion, stir oil, & oregano often until all the liquid has evaporated, zucchini, about 6 mins.
Step #3 Add salt & pepper to taste.
Step #4 With a fork, beat eggs to mix with 1 tbsp water.
Step #5 Turn heat to low, pour egg mixture into pan & stir with a wide spatula, 2 to 3 mins, scraping pan bottom often, just until eggs are softly set, or as firm as you like.
Step #6 Spoon onto plates & sprinkle with cheese.
Step #7 Add tomato salsa, salt, & pepper to taste.