Cut the peaches in half and remove the pits. Cut the halves into 4 wedges each. Lay half of the peaches in two rows on a piece of aluminum foil large enough to fold over them on both sides.
Scatter one tablespoon of the butter, half of the thyme and 1 tablespoon of honey over the peaches. Repeat this process with another piece of foil and the remaining peaches and ingredients.
Lightly sprinkle salt over the prepared peaches. Bring the long ends of the foil to meet over the peaches and fold over to seal. Bring the short ends over and press together to seal. This will create two flat packets.
Place the packets, seam-side down on a grill set to medium heat. Cook with the grill cover on for 5 minutes. Flip the packets and cook for another 5 minutes until the peaches are tender when pierced with a fork but not over cooked. Let rest.
To make the Grilled Hot Honey Biscuits:
In a medium bowl, combine the flour, sugar, salt, baking powder and lemon zest. Add the butter and work it into the dry mixture with your fingers until the butter forms small pea-sized clumps. Stir in the buttermilk and gently knead the dough until it comes together.
Roll into a 3-inch-thick log and cut into 8 even pieces. Press the biscuits into 1/2-inch thick disks. The biscuits should be flatter than normal to enable them to be cooked on the grill.
Spray both sides of the biscuits with nonstick spray and place on the grill set to very low heat. Cook for 5 minutes on each side with the grill cover on. The biscuits are done when they are firm and not squishy in the middle. (NOTE: due to the inconsistent heat of grills, it’s important to monitor the biscuit’s cooking. If needed, flip the biscuits more than once to ensure they are cooked through without burning them.).
Once the biscuits are done, remove from the grill and drizzle with the hot honey. Set aside to cool slightly.
Top the biscuits with 3 or 4 pieces of peaches, making sure to include any delicious juices that seeped out and garnish with a dollop of crème fraiche or unsweetened whipped cream.