Individual chicken and mushroom pies

Name: Individual chicken and mushroom pies
Cook time: 1 h
Total time: 1 h
Cuisine: European, British
Ingredients: 800 gram chicken thigh fillets, cut into 2cm pieces; 1/4 cup (35g) plain flour; 1 tablespoon olive oil; 300 gram button mushrooms, sliced thinly; 3 shallots, sliced thinly; 2 clove garlic, crushed; 2 teaspoon fresh thyme leaves; 1 3/4 cup (430ml) chicken stock; 2 sheets frozen butter puff pastry, thawed; 1 egg, beaten lightly; 2 teaspoon water