Heat the EVOO in a small pot over medium to medium-high heat. Add the garlic, shallots and lemon zest and season with a little salt and lots of pepper. Cook, stirring, for 2 minutes, then add the sherry and cook for 1 minute. Add the chicken stock and honey and simmer until reduced, 15 minutes. Stir in the mustard and tarragon, then remove the glaze from the heat.
Heat a grill pan or griddle over medium-high heat.
Coat the pork chops with EVOO and season liberally with salt and pepper. Grill the chops, turning occasionally, until cooked through, 12 to 15 minutes, basting liberally with the glaze during the last 5 minutes of cooking.