In a bowl, mix together the chicken, avocado, sour cream and cilantro.
Place a burrito shell into a pan under medium heat. Add a sprinkle of cheese to one side of the shell and top with half of the chicken mixture. Add a sprinkle of cheese to top of mixture and top with burrito shell.
On medium heat, cook 2 minutes on the first side or until the shell become a nice brown color. Flip and cook for an additional 2 minutes.
Remove from pan and cut into wedges. Serve with salsa, sour cream or eat as is.