First, whisk together the balsamic, 1 tbsp of oil, dijon, italian seasoning, salt & pepper in a medium bowl. Then, add in the chicken breast and toss to coat. Cover with plastic wrap, transfer to the fridge and let marinate for at least 30 minutes, but up to 2 hours.
1 ¼ lbs boneless skinless chicken breast, ¼ cup balsamic vinegar, 2 tbsp avocado oil, ½ tbsp dijon mustard, ½ tsp italian seasoning, ½ tsp kosher salt, ¼ tsp black pepper, 2 garlic cloves
Once chicken is done marinating, preheat your oven to 375F. Then, bring a large pan to medium-high heat. Once hot, add remaining 1 tbsp of oil. Wipe off as much of the excess marinade as you can, then place the chicken into the pan and let cook for 3 minutes per side. It doesn't have to be fully cooked at this point, as it will finish in the oven.
2 tbsp avocado oil
Place the open-faced ciabatta rolls onto a small baking sheet, then add balsamic chicken onto one side of each of the rolls. If your chicken is too wide for the roll, feel free to cut it to fit. Then, place 4 slices of mozzarella on top of the chicken. Transfer to the oven to bake for 8-10 minutes, or until the chicken reaches 165F and the cheese has melted. Optionally, switch to broil for 2 more minutes.
2 ciabatta sandwich rolls, 7-8 oz mozzarella cheese
While the melts are in the oven, place tomato slices onto a paper towel and season with salt & pepper to taste. Let them sit and the salt will pull water out from the tomatoes. Pat dry.
1 large tomato, kosher salt & black pepper
Next, prepare the green goddess sauce by adding all ingredients to a small food processor or blender and blending until combined. Taste and adjust salt, pepper & lemon juice as needed.
½ cup full-fat plain greek yogurt or skyr, 2 tbsp mayonnaise, 1 cup packed fresh basil, ¼ cup packed fresh parsley, ¼ cup chopped green onion, 1 garlic clove, 1 tbsp lemon juice
On the empty side of each roll, spread a thick layer of the green goddess sauce. You may not use all of the sauce. On the other side, add 3 slices of tomato and half of the arugula. Sandwich the two sides together and cut in half. Enjoy!
1.5 oz baby arugula