Season chicken; brown in olive oil in a large skillet. Remove and set aside.
In the same pan, melt butter and sauté onion for 3 mins.
Add garlic and dry orzo; cook for 1 min to toast.
Pour in broth, simmer covered for 8–10 mins until orzo is tender.
Stir in cream, parmesan, lemon zest, and lemon juice.
Return chicken to pan; stir in spinach until wilted.
Serve warm with fresh parsley.
Notes
Stir the orzo frequently while simmering to prevent sticking.Use fresh lemon juice for the best bright flavor.If the sauce gets too thick while sitting, thin it with a little extra broth.Perfect served with a side of crusty bread or roasted asparagus.