Drain the artichokes in a colander over a bowl, reserving the liquid. Coarsely chop the artichoke hearts. In a medium bowl, combine the artichokes, cheese, 2 tablespoons chives, 1 teaspoon thyme, and 1 teaspoon lemon zest; stir well.
Cut a horizontal slit in the thickest portion of each chicken breast half to form a pocket. Stuff about ¼ cup of the artichoke mixture into each pocket. Sprinkle the chicken with pepper.
Heat 1 teaspoon of oil in a skillet over medium-high heat. Add 4 chicken breasts, and cook 6 minutes on each side or until the chicken is done. Remove the chicken from the skillet. Set aside; keep warm. Repeat the procedure with 1 teaspoon of oil and the remaining chicken breasts.
Add the reserved artichoke liquid, ½ teaspoon thyme, and ½ teaspoon lemon zest to the skillet. In a small bowl, combine the cornstarch and lemon juice; stir well. Add to the skillet. Cover and simmer for 2 minutes or until thoroughly heated.
Spoon the sauce over the chicken and top with 2 tablespoons of chives.
Notes
This one might be tasty with a few chopped sun dried tomatoes added in.