Wash and dry shishito peppers. Heat the olive oil in a cast iron skillet over medium high heat.
Add the shishito peppers and cook until blistered, about 10 minutes, flipping them halfway. Decrease heat as needed to promote even cooking and prevent burning. Add sea salt to taste before serving, and enjoy!
Notes
I like to use coarse or flaky sea salt for maximum flavor.
Other seasoning ideas include lemon juice, cumin, paprika, garlic, or red pepper flakes.