1. Heat a skillet over medium-high heat and add the corn. Cook, turning occasionally, until charred on all sides, about 10 minutes. Remove from heat and let cool.
2. Cut the kernels off the cob and place them in a large mixing bowl.
3. Add the cherry tomatoes, red onion, cilantro, lime juice, chili powder, cotija cheese, and olive oil to the bowl. Toss to combine.
4. Season with salt and pepper to taste. Serve immediately or refrigerate until ready to serve.
Notes:
This salad is best served fresh but can be stored in the refrigerator for up to 2 days.