In a small bowl, whisk together the olive oil, red wine vinegar, garlic, Dijon mustard, Italian seasoning, salt, and pepper until fully combined. You can also shake everything together in a sealed jar.
Place the romaine lettuce, cooked chicken, turkey bacon, avocado, cherry tomatoes, blue cheese, and red onion into a large salad bowl.
Pour the vinaigrette evenly over the salad.
Gently toss until all ingredients are lightly coated. This Chicken Bacon Avocado Chopped Salad tastes best when served immediately.
Enjoy as a complete meal or pair it with warm bread or soup.