Rinse and pat dry your clean chicken breasts and cut into approx 1 ½ inch thick cubes. Keep aside.
In a mixing bowl combine all the above mentioned ingredients starting with the fresh Coriander leafs and ending with the yogurt. Mix it to a smooth marination.
Place your chicken into the marination and massage it with your hands into the chicken. Keep to rest aside minimum for 2 hours.
After 2 hours and just before cooking preheat your oven to 220 Celsius.
In a bowl add some butter and chopped Garlic and heat up and melt the butter. The garlic flavors will infuse into the melted butter. Keep aside.
Grab your wooden skewers and wet them before you start adding your marinated chicken cubes. Add all the chicken cubes on the skewers, about 6 cubes on each skewer.
Place them into the preheated very hot oven and cook them first for 5 minutes, then turn the skewers and bake for another 5 minutes or until you can see that they are getting dry in the oven. Take them out and brush them with a good load of melted butter garlic on all sides.
Place them back into the oven and cook for another 5 minutes and then turn the tikkas again and allow them to cook for another 5 minutes. If they are getting too dry at this point, take out again and repeat your butter brushing and place them again back into the oven for another last 5 minutes.
All together it takes about 20-25 minutes to bake the tikkas and if the color turns a bit blackish at some parts that's when they are ready. Nurture your meat with garlic butter to keep them moist inside. A tandoor cook uses a tandoori oven which is way hotter, so the chicken is kept for about 15 minutes in the oven, but in a home oven you ll need at least 20 minutes to get it right since the heat and environment is different. Enjoy!