Preheat your oven to 400°.

In a small bowl; combine the cumin, coriander and kosher salt. Season both sides of four chicken breasts using all of the spices in the bowl.

Add the two tablespoons of butter and olive oil to a large 12-inch oven-safe skillet and heat over medium-medium/high heat.

Once hot add the chicken in {top side down} and cook for 4-5 minutes or until a nice crust forms and it is easy to turn the chicken. If the chicken sticks, it needs more time.

Once the crust has formed, flip and slide the whole pan into your preheated oven. Bake the chicken for 20 minutes. Once the chicken is fully cooked, use tongs to transfer the chicken to a clean plate and tent with tin foil to keep warm

Heat the skillet over medium-high heat and add in the sliced shallots. Cook, stirring occasionally until they're soft and translucent. Next, pour in the blood orange juice, chicken broth and maple syrup. Add in the rosemary and black pepper and simmer until reduce by half to 75 % and a thick glaze remains... about 8-10 minutes.

Taste and season with kosher salt to taste {if needed} and add the chicken back it to warm up a tad more, then spoon the glaze over top of the chicken and serve.