Prepare the Chicken Marinade first. Get a large bowl. Combine olive oil, lemon juice, garlic, oregano, salt and pepper. Add the Chicken Thighs and give it a mix with your hands. Make sure you get into all the nooks and crannies. Add more oregano if necessary. Leave for 30ish minutes.
Prepare wrap ingredients. Slice tomatoes, slice cucumber into half moon shapes, THINLY slice onions and slice the lettuce.
Add the marinated chicken to a medium-heat skillet or frying pan for 5-7 minutes. Cook in 2 batches to avoid over crowding the pan (this should allow it to brown nicely). Once nicely browned and cooked through leave to rest on a chopping board for 5 minutes before slicing.
Build the wraps. Toast the flatbread or tortilla on a frying pan. I place a tortilla directly onto the gas as this gives a nice charred flavour. You may prefer to heat in frying pan.
Build the wraps - tortilla/flatbreat, then lettuce, onion, cucumber, tomatoes.and tzatziki. Be careful not to over fill, just a little of each is best. Slice the rested chicken and add to the wrap. And enjoy!
To wrap the tortilla properly, first fold up from the bottom, the fold the two adjacent sides over.