Combine the first 9 ingredients in a large bowl. Remove 1 cup of mixture and set aside.
Spray 13 by 9 inch baking dish with cooking spray.
Heat a large skillet over medium heat. Oil both side of one tortilla and heat in skillet for 5 seconds per side. Remove from pan and place 1/2 cup of chicken mixture in the middle of tortilla. Roll tortilla jelly roll style and and place seamside down into the baking dish. Repeat with remaining 7 tortillas.
Spread the reserved 1 cup of chicken mixture over the tortillas.
Cover and bake for 20 minutes.
Uncover, spread with cheddar cheese and green onions, and bake for 5 additional minutes.