1Char the corn:
In a dry skillet over medium-high heat, cook the corn for 5–7 minutes, stirring occasionally, until lightly charred. Let cool slightly.
2Make the dressing:
In a small bowl, whisk together the mayo or yogurt, sour cream, lime juice, chili powder, and a pinch of salt.
3Assemble the salad:
In a large bowl, combine romaine, charred corn, crumbled cheese, and any optional add-ins.
4Dress and finish:
Drizzle with the chili-lime dressing and toss gently to coat. Top with crushed tortilla chips just before serving.