In a mixing bowl, stir together the chicken, spinach and cheese. Spoon into the tortillas. Roll the tortillas and place seam side down on greased cookie sheet. Spray or brush with oil.
Bake in the pre-heated oven for 10 minutes, then flip and bake for another 5 to 10 minutes.
Serve Baked Chicken & Spinach Flautas with side of corn or other favorite tex-mex food.