Heat a skillet or cast-iron pan over medium-high heat, and add a tablespoon or two of oil (don't be shy, now!). Once that oil is hot and sizzling, it's time to add your chicken breast. You'll know it's ready when you hear that beautiful sizzle sound – music to your ears, am I right?
Now, here's the part where most people go wrong: overcooking. Don't do it, folks! You want to cook that chicken breast until it's just done, not until it's as dry as the Sahara desert. Think 5-7 minutes per side, depending on the thickness of your breast (yes, that's a thing!).