Place the chopped lettuce into a large serving bowl.
Arrange the sliced chicken, bacon crumbles, halved cherry tomatoes, hard-boiled eggs, and blue cheese over the lettuce.
In a small jar, combine the olive oil, Dijon mustard, red wine vinegar, minced garlic, salt, and pepper. Shake or whisk until the dressing is well mixed.
Drizzle the dressing over the salad and toss gently to combine. Serve immediately and enjoy!