Grill the corn according to this recipe. Slice the kernels off the cobs and set aside to cool.
In a large bowl, mix together the Greek yogurt, mayonnaise, lime juice, garlic powder, onion powder, and salt. Set aside some of the corn, scallions, and jalapeño for topping the dip, then add the remaining corn, scallions, and jalapeño to the bowl and stir to coat. Chill for at least 1 hour.
To serve, spread the chilled corn dip in a shallow dish and top with the reserved corn, scallions, and jalapeño. Sprinkle with the cheese and drizzle with hot sauce, if desired. Garnish with cilantro and serve with tortilla chips.
Find it online at https://www.loveandlemons.com/corn-dip/