01 -
Preheat a grill, grill basket, or grill pan over medium-high heat for at least 5 minutes. The surface should be hot enough that the peppers sizzle when added.
02 -
Pat the shishitos very dry. Toss them with olive oil, kosher salt, and chili powder if using until lightly coated.
03 -
Spread the peppers in a single layer in the hot grill basket or pan. Cook for 3-4 minutes without constant stirring, until blistered and charred in spots.
04 -
Turn the peppers with tongs or shake the basket. Cook 2-4 minutes more until wrinkled, lightly tender, and charred in patches.
05 -
Transfer the hot peppers to a platter. Squeeze lime juice over the top, then sprinkle with cotija and flaky salt. Serve right away.