On high heat, heat 1 Tbsp oil in a skillet. Sear chicken 2 minutes on both sides. Turn heat down to low, close lid of the skillet and cook another 5-6 minutes, until chicken is tender.
Meanwhile, in a small bowl, combine the ingredients for the spinach salad dressing.
Prepare all the ingredients for the salad ingredients and arrange them in a large salad bowl.
Slice the chicken and add to the salad. Drizzle with the homemade dressing and toss.