Pat the chicken breast dry with paper towels to ensure a good sear.
In a small bowl, combine the chipotle powder, sea salt, black pepper, and garlic powder, then rub the mixture evenly over both sides of the chicken.
Place a cast-iron skillet over medium-high heat and add the corn kernels to the dry pan, cooking for 3-5 minutes until they are slightly charred and golden.
Remove the corn from the pan and place in a bowl; toss with finely diced red onion, diced red bell pepper, lime juice, and chopped cilantro to create the salsa.
Wipe out the skillet, add the extra virgin olive oil, and sear the chicken breast for 5-7 minutes per side until the internal temperature reaches 165 degrees Fahrenheit.
Let the chicken rest for 3 minutes before slicing it against the grain.
Plate the sliced chicken, top generously with the charred corn salsa, and garnish with thin slices of fresh avocado.