Pat the chicken dry and season with salt and pepper.
Sear in the olive oil in a large skillet over medium-high heat, 5-7 minutes per side, until well browned. Set aside.
Lower the heat to medium and cook the garlic for about 30 seconds.
Deglaze with the balsamic vinegar and honey, then simmer 2-3 minutes.
Add the peach slices and herbs; simmer 3-4 minutes, until the sauce turns syrupy.
Return the chicken to the sauce, cover and cook on low 6-8 minutes, until cooked through (165 °F / 74 °C at the thickest part). Spoon the glaze over the chicken and rest a few minutes before serving.