Try this, Walmart has tortillas/wraps with 110 calories, put 3 oz cooked, sliced chicken breast 93 calories, a slice of low fat cheese (I found swiss cheese with 60 cal a slice). Microwave that for about one minute and put two tablespoons of salsa (10 cal) or two tablespoons lowfat ranch dressing (60 cal). Works out to be close to 300 cal and around 30 grams of protein. You can substitute the chicken breast with 3 oz ground turkey or a can of tuna, or some sliced turkey or chicken breast. This has a bit of sodium in it, but that shouldn't be a big concern right now for you unless you have some other medical considerations.