Whisk self‑rising flour, sugar, baking powder, and salt.
Whisk egg, buttermilk, and melted butter; fold into dry ingredients until just combined.
Preheat griddle over medium heat; brush with oil.
Pour 4–6 Tbsp batter per pancake; cook until bubbles form and edges set, 2–3 min; flip and cook 1–2 min.
Wipe and re‑oil griddle between batches; serve warm.