In a large bowl, whisk together the flour, sugar, baking powder, baking soda, salt, and matcha powder until well combined.
In a separate bowl, mix the buttermilk, egg, melted butter, and vanilla extract until smooth.
Pour the wet ingredients into the dry ingredients and gently stir until just combined. Be careful not to overmix; a few lumps are okay.
Preheat a non-stick skillet or griddle over medium heat. Lightly grease with cooking spray or a small amount of butter.
Pour about 1/4 cup of batter onto the skillet for each pancake. Cook until bubbles form on the surface, about 2-3 minutes. Flip and cook for another 1-2 minutes until golden brown.
Repeat with the remaining batter, adjusting the heat as necessary to prevent burning.
Serve warm with maple syrup, fresh fruit, or whipped cream.