Preheat the oven to 425°F (220°C).
Combine the softened butter, garlic, chives, parsley, thyme, salt, and pepper in a medium bowl.
½ cup unsalted butter, 1 clove garlic, 2 teaspoon fresh chive, 2 teaspoon fresh parsley, 2 sprig fresh thyme leaves, kosher salt, black pepper
Spoon the butter onto a sheet of plastic wrap. Roll it into a tight log, twisting the ends of the plastic wrap to seal. Refrigerate until firm.
Place the chicken breasts on a cutting board. Using a meat mallet or rolling pin, gently pound the thickest portions until the breasts are a fairly even thickness, being careful not to damage the skin.
2 skin-on chicken suprêmes
Unwrap the chilled butter and cut it into approximately ¼-inch (five-milimeter) slices. Tuck three slices underneath the skin of each chicken breast.
Season the chicken generously with OSMO Golden Gourmet Seasoning or your seasoning of choice.
OSMO Golden Gourmet Seasoning
Arrange the chicken skin-side up on a parchment-lined baking sheet. Bake for 25-30 minutes, or until the thickest part reaches 150°F (65°C).
Remove the chicken from the oven and rest for five minutes, allowing carryover cooking to continue before serving.