A great quick meal are cheese quesadillas! You can add any protein you like or just leave them plain. Tonight we used leftover rotisserie chicken and shrimp.
Cheese (I buy the mexican blend that is already shredded since it is quicker)
Chicken, shrimp, beef, etc.
On a grill pan (or a regular skillet) heat one side of the tortilla. Add cheese and any other filling you like, then fold and turn over. Serve when cheese is fully melted.