To play up the licorice flavor, I add a pinch of fennel seed and a drizzle of Pernod. The vegetables serve as a bed for seared chicken thighs, ideal for absorbing the herbal aromatics.
04Stir fennel seeds into skillet and cook for 30 seconds. Add sliced fennel and onion, seasoning with remaining 1/4 teaspoon salt and 1/4 teaspoon pepper. Reduce heat to medium and cook, tossing occasionally, until vegetables are caramelized, 15 to 20 minutes. Add Pernod and scrape up any browned bits in the bottom of the skillet; cook until liquid has evaporated, about 1 minute.
05Lay chicken on top of the fennel-onion mixture. Pour 3 tablespoons water into the pan. Cover skillet and reduce heat to medium-low. Cook until chicken is just cooked through, 8 to 10 minutes. Uncover and cook off any excess liquid if necessary. Stir in lemon juice.
06Serve chicken and vegetables topped with generous dollops of the fennel frond purée.