Prepare the Chicken Filling:

1. Shred the Chicken: If you’re starting with cooked chicken, shred it using two forks or a hand mixer for a finer texture. You can use rotisserie chicken or cook your own chicken breast for the filling.
2. Mix the Filling: In a large bowl, combine the shredded chicken, cheese, sour cream, taco seasoning, onions, cilantro, lime juice, salt, and pepper. Stir until everything is well mixed.

Prepare the Taquitos:

3. Preheat the Oven: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease it with cooking spray to prevent the taquitos from sticking.
4. Warm the Tortillas: To prevent the tortillas from cracking when rolled, warm them for about 20 seconds in the microwave or in a dry skillet. This will make them more pliable for rolling.
5. Fill the Tortillas: Place about 2-3 tablespoons of the chicken mixture in the center of each tortilla. Be sure not to overfill the tortillas, as this can make them harder to roll.
6. Roll the Taquitos: Carefully roll each tortilla tightly around the filling, securing the mixture inside. Place the taquitos seam-side down on the prepared baking sheet.

Bake the Taquitos:

7. Brush with Olive Oil: Lightly brush the rolled taquitos with olive oil or spray them with cooking spray. This will help them crisp up during baking.
8. Bake: Bake for 20-25 minutes or until the taquitos are golden brown and crispy. Keep an eye on them to ensure they don’t burn.
9. Cool: Let the taquitos cool for a few minutes on the baking sheet before serving. This will help them hold their shape and allow the cheese inside to set slightly.

Serve and Enjoy:

10. Serve: Serve the taquitos with your favorite dipping sauces, such as guacamole, salsa, or sour cream. They also go well with a side of Mexican rice, beans, or a fresh salad.