Heat a large cast iron skillet or pan over medium high heat. Drizzle with olive oil then add the corn kernels. Spread in an even layer and let sit for a few minutes before stirring. After about 3-4 minutes, stir and let sit for another 3-4 minutes. You want the corn to get slightly charred but not burnt. (be careful because the kernels can start popping when they get heated). **refer to notes
As the corn is cooking, prep the red pepper, red onion, jalapeño and cilantro. Place in a medium sized bowl.
When corn is done cooking, transfer it to a large bowl. Add the cotija or feta cheese and stir until well combined.
To make the sauce: in a small bowl stir together the Greek yogurt, lime juice, garlic powder, chili powder, pepper and pinch of cayenne pepper.
Add the sauce and red pepper mixture to the corn and stir until well combined. Taste, add more seasonings or lime juice if needed. Garnish with additional cheese or cilantro.