Rinse the romaine lettuce leaves, one by one, under cool water, then pat to drain or use paper towel or a salad spinner to remove the moisture.
Add the washed lettuce leave to a bowl of your liking and add in 2 thinly sliced shallots.
Add the zest of 2 lemons to the salad bowl using a zester or a sharp knife to scrape it off. (If you don’t want to use lemon zest, you can simply use some vinegar)
Squeeze 2 lemons in a small bowl, add in some salt and pepper to taste and ¼ cup of olive oil. Mix to combine the dressing.
Pour the dressing over the lettuce salad and toss a little to combine.
Finally, drizzle some freshly grated Parmesan cheese and some red pepper flakes for a touch of heat and color. Enjoy immediately!