Hi TnT. It's not one I know but for sure most restaurants like to keep their life simple, so it's highly likely they would be using the same chicken tikka preparation they use for all their other chicken tikka. So that's the first part cracked. Plenty of tikka recipes around here, there's a whole forum subsection (shout of you don't find it).
For the rest of the dish I would take a guess at some fine chopped ginger fried till a little sticky and a good squirt of lime juice, then serve the chicken tikka on a bed of lettuce, fried onion, the fried ginger and top with a sprinkle of caramelised onions. Well that's just a guess - maybe you can describe how your local restaurant serves it and someone around here will probably have ideas on how to cook it. That's if they can spare a minute from arguing and accusing each other of being the big bad wolf. Good luk in the kitchen!