Which ingredient is NOT listed in the Grilled Chicken Salad?

The correct answer is guacamole because it is not a standard ingredient found in the Grilled Chicken Salad at Texas Roadhouse. The salad typically includes components like grilled chicken, lettuce, cheese, tomatoes, bacon, and red onion rings, among other ingredients. Guacamole, while it is a popular item in various cuisines, does not feature in the classic recipe for this particular salad at Texas Roadhouse, making it the outlier in the options provided.

In contrast, bacon, red onion rings, and croutons are all common additions that complement the salad's flavor profile, adding texture and richness to the dish.