Season the chicken breasts evenly on both sides with salt, black pepper, garlic powder, and smoked paprika.
Heat olive oil in a large heavy-bottomed skillet over medium-high heat until shimmering.
Place chicken in the skillet and sear for 6 to 8 minutes per side until the internal temperature reaches 165 degrees Fahrenheit (74 degrees Celsius).
In a small mixing bowl, whisk together the honey, hot sauce, apple cider vinegar, and red pepper flakes to create the spicy glaze.
Lower the skillet heat to medium-low and pour the honey mixture directly over the cooked chicken.
Simmer and baste the chicken continuously for 2 to 3 minutes until the glaze reduces and achieves a syrupy consistency.
Remove the skillet from the heat source and immediately distribute the crumbled feta cheese over the glazed chicken breasts.
Garnish with chopped parsley and serve immediately while the glaze is warm and the cheese is slightly softened.