Add 2 T. oil to skillet.
Season the chicken with salt and pepper.
Cook chicken in skillet until browned and cooked through.
Remove to plate and cover to rest.
Add the remaining tablespoon of oil and the garlic.
Stir one minute.
Add the vinegar, sugar, and Worcestershire for one minute.
Stir in the Dijon.
Slice chicken on a diagonal and add to the pan.
Serve over the salad along with the sautéed veggies!