Ranch Baked Quesidillas

1 1/2 c. chicken, cooked and cubed
1 1/4 c. shredded Monterey Jack cheese
1/2 c. Ranch dressing
1/2 c. sour cream
6 tortillas
1 small can diced green chilies (optional)

Mix all ingredients and fill tortillas.  Bake at 350 for 15 minutes.