Melt the butter in a medium-size saucepan over medium heat. Add the garlic then cook while stirring constantly until it becomes light golden brown - be extremely careful to not burn the garlic. Add the chicken broth, dried parsley, and salt then stir to combine. Turn the heat up to high to bring the broth to a simmer.
Once simmering, add the orzo then stir to combine. Place a lid on top of the pot, turn the heat down to low, then gently simmer until the orzo is tender, 15-17 minutes, stirring often and adding a splash more chicken broth near the end if needed. Be sure to keep the heat on low to maintain a very gentle simmer.
Turn the heat off then add the parmesan cheese and stir to combine. Add the half-and-half then stir to combine. Squeeze in a bit of fresh lemon juice, if using, then stir to combine. Taste then add more salt if needed. Scoop onto plates then serve - the orzo will thicken as it cools.
Notes
Jovial has a cassava flour orzo pasta, which I don’t love, nor do I recommend for this dish. I much prefer their Brown Rice Orzo.