Summer Chicken Salad

Name: Summer Chicken Salad
Cook time: 40 min
Total time: 40 min
Cuisine: American
Ingredients: 3 boneless, skinless chicken breasts; Salt and freshly ground black pepper; Olive oil, for drizzling; 4 ears fresh corn (or use 2 if on the large side); 3 tablespoons minced fresh dill, plus more for serving; 3 stalks celery (inner light green stalks and leaves), finely diced; 1 medium red onion, finely diced; 1 1/2 cups blueberries; 3/4 cup crumbled feta, plus more for serving; 1/4 cup half-and-half; 1/4 cup mayonnaise; 1/4 cup sour cream; 1 teaspoon sugar; Juice of 1 lemon; 1 head butter lettuce, leaves separated