Preheat oven to 425, Toss broccoli and garlic with 1 Tbsp oil, salt, and pepper; roast 10 minutes.

Pound chicken breasts to even thickness, season with salt and pepper and coat in flour.

Heat 1 Tbsp oil in large skillet on medium-high and cook chicken until golden brown,
 3 to 5 minutes per side.

Nestle chicken amidst broccoli and roast until chicken is cooked through out, about 8-10 mins.

In same skillet over medium heat add oil, once hot add lemon pieces and cook while stirring for 3 minutes. Add lemon juice and 1/3 cup water and cook 3 mins. Spoon over chicken and serve with broccoli.