Set your oven to 400°F (200°C) to preheat.
Cook the chicken breasts in a skillet over medium heat until they are fully cooked through, about 20 minutes, then let them cool before shredding.
Combine the shredded chicken with buffalo sauce and softened cream cheese in a bowl until the mixture is thoroughly blended.
Place the tortillas flat on a surface, spread the chicken filling evenly onto each, roll them tightly, and secure with toothpicks if necessary.
Arrange the taquitos seam-side down on a baking sheet lined with parchment paper.
Bake in the oven for 15 to 20 minutes until they turn golden brown and get crispy.
Serve the taquitos garnished with chopped green onions and a spoonful of sour cream for dipping.