The variety of cuisines is found in different areas. But talking about a mouthwatering delicious chicken tikka of Indian cuisine with loaded spices will make up your day!
To define Tikka is basically cubes or pieces, and chicken tikka is cubed chicken which is marinated into spiced yogurt and might be grilled too!

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The Ingredients

Here's list of all the ingredients you will be in need of while preparing chicken tikka!
{1}. Boneless chicken breasts, cutted into pieces and yes the quantity depends. here, we gonna take 3.
{2}. One large cubed onion
{3}. 8 ounces of tomato sauce, one can will go for sure.
{4}. Ginger garlic paste or 1 clove garlic, minced
{5}. One tablespoon butter and one teaspoon ground cinnamon
{6}. One teaspoon garam masala (typically Indian), also pouches are easily available in market.
{7}. One and half cup yogurt and heavy cream
{8}. Half teaspoon chilli powder, black pepper, turmeric, salt.
{9}. 4 long skewers
{10}. One lemon

Let's begin....

i/ First of all get all stuff ready in a large bowl by adding yogurt, lemon juice, cinnamon, black pepper, ginger, chilli powder, black pepper, turmeric and salt. Stir in chicken, cover, and refrigerate for 1 hour.
ii/ We need to grill the marinated chicken now, for that Preheat a grill for high heat.
iii/ Now greasing the grill grate with oil (I suggest olive oil)
iv/ Then thread chicken onto skewers and grill for 5 mins on each side.
v/ Now we need to prepare a little amount of sauce to spread on the grilled chicken, the sauce is just a choice you can even platter the grilled chicken on plate with lemon on it, but the Indian fusion will taste better with sauce on the grilled spicy chicken.
vi/ For the sauce Melt butter in a large heavy skillet over medium heat. Saute garlic and some onion cubes 1 minute. Season with garam masala and salt. Stir in tomato sauce and cream. Simmer on low heat until sauce thickens for about 20 minutes.
vii/ Now just the last step, either you can put the sauce as a dip on the side or can add the grilled chicken into the sauce and simmer for 10 mins straight. and boom you're done!
viii/ Just transfer to a serving platter, and garnish with lemon and coriander.

The delicious mouth watering dish will be prepared. I just have elaborated the steps rest the procedure is easy.
@josua1 hopefully this might be helpful.
Do let me know if you have any query and if you have prepared the dish I would love to read the experience.