Chicken and avocado salad was suspect

Today Sunday 25 January we went to Bossa Meerendal for a light lunch at 12 noon. The service was good and the food arrived quite quickly. My friend ordered the Rump salad and I had the chicken and avocado salad. The chicken looked like processed chicken pieces from a tin and there were pieces of ham as well. It was never the less quite tasty. Afterwards I started feeling nauseous and by 6pm I started vomiting chunks of chicken salad. I wonder if anyone else had the same experience? The chicken was definitely off although with the honey mustard dressing I couldn't taste anything was wrong.