Season both sides of thin cut chicken breasts with salt and pepper.
In a large, oven safe skillet, heat olive oil on medium high heat.
Add chicken and cook until brown on both sides, about 5 minutes per side.
While chicken is cooking, preheat to 350 degrees.
Remove chicken from pan, the inside may not be cooked through, it will finish in the oven.
To the pan, add garlic and shallots. Saute for 3 minutes until shallots become translucent. Add the lemon juice to deglaze (and get up any tasty bits that may have stuck to the pan!). Then add in the chicken stock.
Turn down heat to low and add in butter until it melts. Add in heavy cream and stir to combine. Cook on low for 1 minute.
Place chicken back in and finish in the oven, about 15-20 minutes.
Once chicken is cooked through, remove from oven and add parsley.
Serve over a bed of couscous, with sauteed mushrooms and spinach.