Preheat oven to 400. Drizzle olive oil on chicken and season with salt and pepper. Bake for about 10 min per side or until the chicken reaches an internal temperature of 165. When cool enough to touch, sliced chicken into strips
Meanwhile, add butter to a skillet. Chop mushrooms and add to the skillet with salt, pepper and a drizzle of balsamic vinegar. Cook for about 8 minutes or until the mushrooms are tender.
Toast bread and add pesto spread. Add chicken, balsamic mushrooms, a sprinkle of parmesan and a handful of arugula. That’s it! Enjoy!
