Preheat the oven to 450°F. Line a rimmed roasting pan with foil and fit it with a roasting rack. Spray the roasting rack with olive oil.
In a small bowl, whisk the mustard and honey. Divide into two portions. Set aside.
Sprinkle both sides of the chicken with salt, pepper, and garlic powder. Wrap each chicken breast with 2 strips of bacon.
Place the wrapped chicken breasts on the prepared roasting rack. Brush them with half the mustard-honey sauce. Wash the basting brush with warm, soapy water and keep the other half of the sauce for brushing the chicken pieces when they finish cooking.
Bake the chicken breasts for 15-20 minutes, until they reach an internal temperature of 165°F and the bacon is browned and crispy.
Allow the chicken breasts to rest, loosely covered with foil, for about 10 minutes. Brush their tops with the remaining sauce and serve.
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Notes
This recipe was written for small chicken breasts weighing 6-7 ounces each. If you use large pieces weighing 10-12 ounces each, use just two for four people and wrap each of them with 4 strips of bacon. You will need to bake them for longer - 25-30 minutes, so cover them loosely with foil after the first 20 minutes to avoid scorching the bacon. To make sure they are fully cooked, test them with an instant-read thermometer inserted into the thickest part. It should read 165ºF.
You can keep the leftovers in an airtight container in the fridge for up to 4 days. Reheat them, covered, in the microwave at 50% power. The bacon will not be as crispy as when freshly cooked. To crisp it up, reheat the leftovers uncovered in a 350°F oven until heated through.