In a bowl, whisk together the almond flour, egg, baking powder, sweetener, and salt. Add the water and whisk until just combined. Heat a large skillet or griddle over medium heat. Add a small amount of butter or oil to the skillet. Pour 1/4 cup of batter onto the skillet for each pancake. Cook the pancakes for 2-3 minutes per side, or until golden brown and cooked through. Serve with your favorite toppings, such as butter, syrup, or fruit.