In a large bowl, whisk together the flour, sugar, baking soda, baking powder, poppy seeds and salt.
In a separate small bowl, whisk together the buttermilk, lemon zest, egg and melted butter.
Add the wet ingredients to the dry ingredients and stir just until combined. (The batter should be lumpy.)
Heat a nonstick sauté pan or griddle over medium-low heat. Add about 1/4 cup of batter to form each pancake. Once bubbles form across the entire surface of each pancake, flip them once and continue cooking another 30 seconds or until cooked through.
Serve immediately with maple syrup or other toppings.