Apple, Bacon, & Pecan Salad

head lettuce (, chopped (I like to use a mixture of red leaf, spring mix, and spinach))

medium Fuji apples (, washed and diced)

slice bacon (, cooked and crumbled)

chopped pecans

cooked chicken (, diced)

garlic (, minced)

dijon mustard

balsamic vinegar

olive oil

salt and freshly ground black pepper (, to taste)