In a small bowl, mix together the uncooked ground chicken and pesto. Use 3 tbsp pesto if you want a stronger flavor.
Spread the chicken mixture over the tortillas evenly. It will be a fairly thin layer, approximately 2 oz of meat.
Heat a skillet over low to medium heat. I set the oven dial to 4. Do not let the pan get too hot or the tacos will burn before the chicken is cooked through.
Add a small amount of oil to your pan to prevent sticking. Then, place the tortilla meat side down in the heated pan. Cover and cook for 4 - 5 minutes or until the meat is cooked through and browned. With a metal spatula, flip the taco. Add 4 - 5 mozzarella cheese balls on top of the cooked chicken. Cover and cook for another 1 - 2 minutes or until the cheese starts to melt and the tortilla is browned.
Repeat this process until all your tacos are cooked. You can use a large skillet and cook multiple at once, if desired.
Once the tacos are cooked, top with greens, sundried tomatoes, and parmesan cheese. Enjoy!