Place chicken legs in a dish and season with salt, pepper, cumin, thyme and onion powder.
Place all the tamarind sauce in the blender and set aside.
Preheat oven to 375°F.
Wrap a bacon slice around each chicken leg. Arrange the chicken on baking pan. Drizzle the tamarind sauce over the legs and place in the fridge for about 30 minutes.
Bake for about 45 minutes, until bacon is crisp and chicken cooked through.