Fill a large pot with salted water and bring it to a boil, then add the pasta and cook until just tender, about 9 to 11 minutes. Drain the pasta, saving 1/2 cup of the cooking water for later.
While the pasta is cooking, cut the chicken breasts into thin strips. Heat olive oil in a large skillet over medium-high heat and season the chicken with salt. Cook for 4 to 5 minutes on each side until golden brown and fully cooked, then remove from the pan.
Lower the heat to medium and add the minced garlic to the skillet, cooking for roughly 1 minute while stirring often until fragrant.
Mix in the honey, freshly cracked black pepper, and red pepper flakes if you want some heat. Allow the sauce to bubble and caramelize slightly for about 1 minute while stirring.
Add the chicken back to the skillet and coat it thoroughly with the honey pepper sauce. Then incorporate the drained pasta, adding a splash of the reserved pasta water if the sauce needs loosening. Stir everything to combine and ensure the sauce is glossy and evenly distributed.
Turn off the heat, sprinkle the chopped parsley over the dish, and gently toss. Serve right away with grated Parmesan cheese on the side if desired.