01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease with oil.
02 - In a small bowl, blend the garlic powder, paprika, salt, and black pepper until uniform.
03 - Pat chicken breasts dry with paper towels. Using a sharp knife, create a deep pocket in each breast, being careful not to slice through.
04 - Brush chicken breasts with olive oil, then rub seasoning mix over each, ensuring to coat the inside of the pockets.
05 - In a mixing bowl, thoroughly mix chopped broccoli, shredded cheddar cheese, cream cheese, Parmesan, Dijon mustard, and minced garlic.
06 - Evenly pack the broccoli-cheese mixture into each chicken pocket. Secure openings with toothpicks if needed.
07 - Set the stuffed chicken breasts on the prepared baking sheet, spaced evenly.
08 - Place in the oven and bake for 25 to 30 minutes, or until the internal temperature of the thickest part reaches 165°F and the filling is bubbly.
09 - Allow chicken to rest for 5 minutes after baking. Remove toothpicks before plating.