Steps
1. In a bowl, mix Greek yogurt and Dijon mustard until well combined.
2. Season the grilled chicken slices with salt and pepper.
3. Lay the whole wheat tortilla flat and spread the yogurt-mustard mixture over it.
4. Place the sliced chicken, chopped pickles, and mixed greens on top of the tortilla.
5. Roll the tortilla tightly to form a wrap, tucking in the sides as you go.
6. Slice the wrap in half and serve immediately.