Preheat your oven to 425°F. Wash and dry the sweet potato, then cut it into 1/2-inch thick rounds for crispiness. Toss the rounds with olive oil, salt, and a pinch of smoked paprika, and spread them out on a baking sheet.
Roast the sweet potato rounds in the oven for about 20-25 minutes, flipping halfway through, until they are tender inside and crispy on the edges.
While the potatoes are roasting, season the chicken breast with salt, pepper, and a light dusting of smoked paprika. Heat a non-stick skillet over medium-high heat.
Sear the chicken breast on both sides until golden, about 3-4 minutes per side. Once seared, reduce heat to medium and add minced garlic to the pan, cooking for 1 minute until fragrant.
Pour in the chicken broth and add the heavy cream. Allow the mixture to simmer for 2 minutes to combine the flavors, then stir in the Parmesan cheese until the sauce becomes creamy and slightly thickened.
Continue cooking the chicken in the sauce for another 3-4 minutes until it reaches an internal temperature of 165°F and is well coated with the creamy, smoky garlic Parmesan sauce.
Plate the chicken breast with a serving of the crispy roasted sweet potato rounds. Drizzle any remaining sauce over the chicken and potatoes, and adjust seasoning with salt and pepper if needed.