Add oil to a medium sized pot, and add the oil.
Add the chicken and saute for 5-7 minutes until cooked through.
Remove the chicken from the pot, and set aside.
Now add ginger and garlic, and saute for 20 seconds or so.
Then add the spices and saute for 30 seconds. Add the crushed tomatoes. Add the salt and sugar, 1/4 cup water, and allow the sauce to reach a simmer.
Lower the heat, and cook for about 15-20 minutes, while stirring every few minutes.
Add the chicken back to the pot, and stir to combine. Refer to finishing instructions below.