Pat the chicken dry and season with salt and pepper to taste.
In a small bowl, whisk the maple syrup, balsamic vinegar, Dijon mustard and cayenne pepper. Set aside.
Heat the olive oil in a large heavy skillet over medium-high heat. Add the chicken breast and cook for about 5-6 minutes per side or until cooked through. Remove chicken from the skillet.
Lower the heat to medium-low and add the garlic. Cook for about a minute stirring constantly. Add the broth and scrape the bottom of the skillet with a wooden spoon to remove any brown bits. Bring to a boil and cook for about 2 minutes or until the broth has reduced by half.
Stir in the maple syrup mixture and mix to combine. Return the chicken to the skillet and turn to coat. Cook for 2-3 minutes or until the chicken is well coated and the mixture looks syrupy. Remove from the heat and serve. Garnish with chopped parsley (optional).
Notes
Pan dry the chicken to get a nice golden brown sear.