In a medium bowl, toss the apple slices and lemon juice, then sprinkle the fruit with 3 teaspoons sugar and 1/2 teaspoon cinnamon.
In a medium bowl, whisk together the remaining sugar and cinnamon with the baking powder, baking soda, flour, and salt. In another bowl, whisk together the remaining ingredients. Add the flour mixture and whisk into a slightly lumpy batter.
In a large skillet over medium heat, melt 1/2 teaspoon butter. Spoon batter over an apple slice, letting the excess fall back into the bowl (this coating method will keep the slices from breaking). Place the pancake in the pan, then repeat with two more apple slices.
Cook the pancakes until golden brown on each side, about 5 minutes per side. Cook the remaining apple slices, adding butter to the pan as needed. Serve immediately.