Season the chicken breast with a pinch of salt and pepper, then grill over medium-high heat for 6-7 minutes per side until cooked through.
Place the egg in a small pot of water, bring to a boil, then cover and remove from heat for 10 minutes before peeling and slicing.
Cook the turkey bacon in a skillet over medium heat until it reaches your desired level of crispness, then chop into small bits.
In a small bowl, whisk together the Greek yogurt, lemon juice, dried dill, garlic powder, and remaining salt and pepper to create the zesty ranch dressing.
Chop the romaine lettuce, halve the cherry tomatoes, slice the cucumber, and dice the avocado.
Arrange the lettuce in a large bowl and top with rows of grilled chicken, sliced egg, bacon bits, tomatoes, cucumber, and avocado.
Drizzle the zesty ranch dressing over the top and serve immediately.