In a large bowl, whisk together the garlic, parsley, sage, lemon zest, lemon juice, mustards, honey, olive oil, salt and pepper.
Add the chicken and use your hands to coat each piece with the mixture. Let the chicken marinate for 30 minutes to 1 hour at room temperature (or up to overnight, covered, in the refrigerator; bring to room temperature before proceeding).
Preheat the grill for high heat (or heat a large grill pan set over a couple of burners). Make sure your grates are super-clean.
Grill the chicken, turning the pieces occasionally, until it is nicely browned and is firm to the touch, about 5 minutes per side. Transfer the chicken to a platter and serve immediately or a room temperature with lemon wedges for squeezing over.