Chicken Pot Pie Turnovers

Name: Chicken Pot Pie Turnovers
Ingredients: 1 tbsp. extra-virgin olive oil; 8 oz. chicken breasts, cut into 3/4 pieces; kosher salt; Freshly ground black pepper; 3 tbsp. lemon juice; 4 tbsp. cream cheese, cut into small cubes; 3/4 c. frozen corn kernels, thawed; 3/4 c. frozen peas, thawed; 1/4 c. fresh flat-leaf parsley, roughly chopped; 2 scallions, thinly sliced; 2 tbsp. fresh dill, finely chopped; 2 c. all-purpose flour, plus more for the surface; 1 tbsp. baking powder; 1 tsp. kosher salt; 1/2 tsp. Freshly ground black pepper; 5 tbsp. very cold unsalted butter, cut into cubes; 1/4 c. fresh dill, finely chopped; 3/4 c. whole milk; 1 tbsp. heavy cream