Combine cooked chicken with onion, peppers, hot sauce, salt and pepper. Mix well. Heat a large saute pan or use an electric griddle. Divide the chicken mixture and cheese between the 4 tortillas and fold in half. Spray the pan or griddle with pan spray. Place quesadilla on pan or griddle and cook 3-4 minutes until light brown. Flip quesadilla over and continue cooking on the opposite side an additional 3-4 minutes until tortilla is light brown and ingredients are heated throughout. Remove from pan and hold in a warm oven until all quesadillas are cooked. Remove from oven and cut each quesadilla into 4 triangles.

Serve with sour cream and salsa.