How to Make It
Preheat the oven to 400°. Spread the walnuts in a pie plate and toast for 6 minutes, until fragrant. Let cool, then chop.
In a small bowl, mash the goat cheese with the lemon zest, garlic and half of the walnuts; season with salt and pepper. Using a small knife, cut a pocket in the side of each chicken breast; keep the pocket opening as small as possible. Stuff the chicken breasts with the mixture and gently press to flatten them.
In a large ovenproof skillet, heat the olive oil until shimmering. Season the chicken with salt and pepper and cook over moderately high heat, turning once, until browned, about 6 minutes. Transfer the skillet to the oven and roast the chicken for 5 minutes. Transfer the chicken breasts to a platter and keep warm.
Add the lemon juice and stock to the skillet and cook over moderately high heat, scraping up any browned bits stuck to the pan. Simmer for 3 minutes. Stir in the walnut oil, parsley and the remaining chopped walnuts. Transfer the chicken breasts to plates, spoon the walnut sauce on top and serve.
One serving 370 cal, 20 gm total fat, 4.1 gm saturated fat, 3 gm carb, 0.5 gm fiber.
Steamed rice or couscous.