Heat olive oil in a large skillet over medium heat and toast cumin seeds until they sizzle and become aromatic.
Add the diced yellow onion and sauté for 5 minutes until translucent and slightly golden around the edges.
Stir in the minced garlic and grated ginger, cooking for one minute until the fragrance fills the kitchen.
Add the cubed chicken breast to the skillet and sear until browned on all sides, about 4 minutes.
Stir in the garam masala, turmeric, sea salt, and black pepper to evenly coat the chicken and onions.
Pour in the tomato puree and chickpeas, then reduce the heat to low and simmer for 10 minutes until the chicken is cooked through.
Remove the skillet from the heat and stir in half of the Greek yogurt to create a velvety, rich texture.
Serve the masala in a shallow bowl topped with the remaining dollop of yogurt and a sprinkle of fresh cilantro.