Cook chicken (or beef) in a pan add spices to it too for extra flavor, (suggested seasonings: taco seasonings, Cajun pepper, or chili pepper works great)
Cut chicken into bite sized pieces
Transfer the chicken onto a plate so you can heat up your tortilla on the pan
Now add whatever you'd like to your quesadilla, I suggest you put your chicken down first then add the cheese and the rice otherwise it will be difficult to fold, try not to over stuff as well!
Now fold and enjoy, and add chips! (if you want to add additional things like sour cream make sure you take your quesadilla out of the pan first)! Check out my other guides too! :)