My Husband one day took the left over chicken breast and made these yummy Chicken Quesadillas. Since then we actually cook the chicken to make them. Its easy and you don't have to go to a restaurant and pay 10 dollars for only 1 !!!
If you don't want to make the chicken simply wait until one day when you have left over chicken, roasted chicken makes them taste really good. I wanted to go buy one of those "under a lamp" chickens just so I can make them.
Tip: The onions for this recipe i like to cut them in slices, just cut up the onions in circles and then half the circles, thin slices are the best unless you want your Quesadillas to be really bulky, the chicken is bulky enough.
(One of my step asks you to specifically place your tortillas a certain side up, I do it that way so I don't warm the tortillas too much making them hard. Flour tortillas tend to burn faster then corn tortillas. I like my quesadillas cheese soft not crunchy hard).
(I estimated the time for both prep and cook, we all have our different ways of cooking and prep-ing or foods it may take less time for you or more)