Blend the creamy avocado ranch dressing by combining avocado, mayonnaise, lemon juice, dried dill, garlic, parsley, and water in a blender until smooth.

Season the shrimp with Old Bay seasoning in a bowl, ensuring they're evenly coated.

Heat olive oil in a skillet over medium-high heat, then sauté shrimp for 2-3 minutes on each side until pink and opaque.

In a large mixing bowl, place spinach, top with shrimp, avocado, grape tomatoes, and onion, drizzle with dressing, and toss gently.

Add remaining shrimp and avocado slices on top with bacon, and garnish with parsley.