Healthy Greek Style Chicken Tacos Recipe

Idea I came up with for something quick and healthy that can be mostly prepared in advance. I used a large cooked chicken breast cut-up but would also be a good use for leftover roast chicken. Makes 4 large tacos so I think would be a complete meal for two or a light snack / lunch for four, if using the smaller shells you'll probably be able to fill six of them. I listed a gherkin because that's what I used but you could also use a small handful of diced cucumber. Because it's served slightly chilled I think this would make a nice and quick summer meal at the end of a hot day. You could also use a low-fat Greek yoghurt and/or omit the feta. There is not a lot of sweetness in the recipe so I couldn't really say it was a kid pleaser, more of a slightly sharp taste from the salty and sour ingredients.