In a large bowl mix together the chicken, cream cheese, sour cream, salsa, co-jack and spinach. Add salt and pepper to taste.
Once oil is hot enough (place hand over pan, above oil, to feel heat), add a few tablespoons of chicken/cream cheese mixture to the center of a tortilla and spread out. Roll up and set seam side down in oil using tongs. Cook until golden brown on both sides.
Repeat until all the tortillas are filled, rolled and fried.