Remove any attached side-muscle on the scallop by pinching and tearing it away from the scallop.
Season scallops on all sides with salt and pepper.
Set a large skillet over high heat and add 2 tablespoons butter; cook until sizzling.
Add the scallops in one layer; do not overcrowd the pan because that will steam the scallops. If skillet is too small for all the scallops, cook them in batches.
Cook scallops for 2 minutes, or until browned on the bottom. Do not move them around.
Flip over the scallops, lower heat to medium-high, and continue to cook for 1-1/2 to 2 minutes, or until bottom is golden brown.
Remove scallops from pan and set aside on a plate.
Melt remaining butter in the skillet, scraping up any browned bits left on the bottom of the pan.
Stir in garlic; cook for 20 seconds, stirring frequently. Do not burn the garlic.
Add chicken broth, bring to a boil, and cook for 3 to 4 minutes, or until broth is reduced.
Whisk in heavy cream and lemon juice; whisk until well combined.
Continue to cook for 2 minutes, or until slightly thickened.