Cut the meat into bite-sized pieces. Heat one tablespoon of olive oil in a large pan over medium-high heat. Season the meat with salt and pepper and add to the pan. Cook for 8-10 minutes, stirring occasionally.
Cut the green beans into smaller pieces. Slice the mushrooms. Roughly chop the pepper. Add the green beans, mushrooms, and peppers to the pan and stir well. Continue to cook for another 15 minutes over medium heat. Stir occasionally.
Remove from the heat once everything is fully cooked through and the liquid has evaporated. Taste and optionally add more salt or pepper. Allow it to cool until slightly warm.
Meanwhile, roughly chop the parsley and spinach. Peel and chop the avocado. Add the chicken mixture to a bowl along with chopped avocado, spinach, and parsley. Mix well.
Transfer the salad to serving plates. Drizzle with olive oil and lime juice. Add more salt or pepper to taste and serve immediately. Enjoy!