2 pounds boneless, skinless chicken thighs, cut into 1-inch pieces
1/2 cup whole-milk plain yogurt (not Greek)
1 1/2 teaspoons kosher salt, divided
1 large yellow onion, diced
3 cloves garlic, minced
1 tablespoon peeled and minced fresh ginger
2 teaspoons ground coriander
2 teaspoons garam masala
1 teaspoon ground cumin
1 teaspoon ground turmeric
2 tablespoons tomato paste
1 (15-ounce) can diced tomatoes, drained
3/4 cup heavy cream or coconut milk
Chopped fresh cilantro
Cooked rice or naan, for serving