In a medium bowl, whisk together the extra virgin olive oil, the juice and zest of one lemon, honey, and a pinch of salt and pepper until well combined and emulsified.

In a large salad bowl, combine the chopped romaine lettuce, grated parmesan cheese, and thinly sliced red onion. Sprinkle in crushed red pepper flakes and gently mix with your hands.

Drizzle the prepared dressing over the salad mixture and toss gently to coat the greens without bruising them.

Transfer the dressed salad to a serving platter or individual bowls and garnish with extra parmesan and crushed red pepper flakes.