Preheat the oven to 425 degrees F. Spray a cast iron skillet with nonstick cooking spray and place skillet in oven to heat.
Bring cracklings and water to a boil. Boil for 5 to 8 minutes until cracklings are soft. Add cornmeal, salt and jalapeno to mixture, stirring well. Using a large serving spoon, drop batter in pone shapes into hot skillet. This should yield 5 to 6 pones. Place in oven and bake for 15 minutes. Then reduce heat to 350 degrees F and bake for additional 30 to 45 minutes. The skillet should be placed near the top of the oven.