1Heat a cast iron skillet (or other oven safe pan) over medium heat.
2Cook the diced bacon until it starts to brown and is just beginning to get crispy on the sides. Remove from the skillet and place on a paper towel lined plate.
3While the bacon is cooking, chop your brussels sprouts into slices or thin rounds, slice your lemon into rounds. Chop up your garlic and rosemary also.
4Preheat your oven to 400 degrees.
5Sprinkle the chicken with salt & pepper on either side. When the bacon is done, add garlic to cook for 1-2 minutes, stirring frequently.
6Place chicken directly on top of the garlic to brown it on each side. It should just take about 5 minutes each side, depending on how thick your chicken breasts are.
7Once the chicken is browned, add your brussels sprouts and rosemary into the skillet. Sprinkle the bacon on top.
8Season the pan with salt and pepper to taste.
9Layer your slices of lemon on top of each piece of chicken.
10Use an oven mitt and move your skillet to the oven and bake for 25-30 minutes, depending on the size of your chicken breasts, until the chicken is cooked through.
11Serve and enjoy!