- Heat oven to 375ºF.
- Combine first 4 ingredients. Whisk egg and water until blended.
- Unroll 1 pie crust on lightly floured surface; roll out to 12-inch diameter with rolling pin. Cut into 8 (4-inch) rounds with biscuit cutter, rerolling scraps as necessary; place in single layer on parchment-covered baking sheet. Repeat with remaining pie crust.
- Spoon 2 Tbsp. chicken mixture onto center of each dough round; brush edge with egg. Fold in half. Gently press tops to remove excess air; seal edges with fork. Brush with remaining egg. Sprinkle with chili powder.
- Bake 15 min. or until golden brown.