Preheat the oven to 350 degrees.
Remove the rotisserie chicken from the bones and shred into smaller pieces. Mix in the taco seasoning.
Melt the butter in a saucepan over medium heat and then add the flour. Stir for a few minutes, then stir in the chicken broth until it thickens. Remove the pan from the heat and stir in the sour cream and green chiles.
Spread some of the sauce over the bottom of a 13x9 pan.
Fill each tortilla with 1/3-1/2 cup of chicken (depending on how much chicken you have) and roll up, then place in the pan.
When you've filled all 8 tortillas, pour over the rest of the sauce. Then sprinkle the cheese on top.
Bake for 25-30 minutes, until cheese is melted on top.