More efficient way would be foliar spraying the plant, take in mind that calcium is not mobile nutrient so deformed leaves won't be able to 'fix' themselves, bur rather it would only affect new growth. And you should go to your like plant center or whatever its called and ask for calcium foliar spray or some containing all minerals needed for healthy development of plants. An additional measure would be checking pH level of soil making sure your plants can actually absorb calcium from the soil. (It shouldn't be too acidic)