Place chicken in a shallow dish with ingredients for marinade. Use hands to mix well. Cover and refrigerate for 30 minutes to an hour.
Heat a large grill pan over medium-high heat and grease with cooking oil. Once the pan is very hot, add the chicken, using tongs.
Grill for 7 to 8 minutes on each side. Remove from the pan to a cutting board and let the chicken rest.
Divide mixed greens among 4 MPOF round containers and top with sliced chicken, artichoke hearts, cucumber, red onion, avocado, feta cheese, and pistachios. Divide the vinaigrette among 4 dressing cups.