Pat the chicken thighs dry with paper towels, then season generously with salt, pepper, and ground cumin.
Heat the oil in a skillet over medium-high heat until shimmering, then place the chicken thighs skin-side down.
Sear the chicken for about 5-7 minutes, until the skin is golden brown and crispy, then flip and cook another 5 minutes on the other side.
Add the roasted and minced garlic to the skillet, frying until fragrant, about 30 seconds.
Pour in the coconut milk, stirring gently to loosen any browned bits from the bottom of the pan, and bring to a simmer.
Reduce the heat to medium-low, cover partially, and let the chicken simmer in the coconut sauce for about 15-20 minutes, until cooked through and tender.
Remove the lid and increase the heat slightly to allow the sauce to thicken and reduce for another 5 minutes, creating a glossy coating over the chicken.
Check the seasoning, adjusting salt and pepper as needed, and then serve the chicken hot with spoonfuls of the rich, fragrant sauce.