Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a small skillet, heat olive oil over medium heat; sauté onions and bell peppers until softened.
Stir in minced garlic, cumin, smoked paprika, salt, and pepper, cooking for 1 minute until fragrant.
Add the shredded chicken to the skillet, tossing with the vegetables and spices until well combined.
Using a large round cookie cutter or a bowl, cut 2-3 circles out of each tortilla to create empanada wrappers.
Place a spoonful of the chicken mixture onto one half of each tortilla circle.
Fold the tortilla over the filling and press the edges firmly with a fork to seal.
Arrange the empanadas on the baking sheet and brush the tops lightly with the whisked egg white.
Bake for 10-12 minutes or until the edges are golden brown and crisp.
Serve warm with fresh salsa on the side for dipping.