Cheesy Hot Chicken Salad

Name: Cheesy Hot Chicken Salad
Ingredients: 4 chicken breasts cooked & diced into 1/2 inch pieces (or shredded); 2 celery stalks, halved lengthwise and finely chopped; 5 green onions, finely chopped (reserve 2 tablespoons for garnish); 2 tablespoons fresh thyme, finely chopped; 2 cups shredded sharp cheddar cheese (white preferably); 1 tablespoon fresh lemon juice (about 1/2 a lemon); 1 cup mayonnaise; 1 teaspoon salt; 1 teaspoon pepper; 1/3 cup yellow cheddar to top before baking; 6-12 frozen puff pastry shells