1. In a large skillet, heat the olive oil over medium heat. Add the finely chopped onion and sauté until translucent, about 3-4 minutes. Stir in the minced garlic and red pepper flakes, cooking for another minute until fragrant.
2. Add the ground chicken to the skillet, breaking it up with a wooden spoon. Cook until browned and cooked through, about 6-8 minutes. Season with salt and pepper to taste.
3. Reduce the heat to low and pour in the heavy cream and chicken broth. Stir gently to combine, allowing the mixture to simmer for 2-3 minutes.
4. Gradually add the grated Parmesan cheese, stirring constantly until the cheese is melted and the sauce is thickened to your liking.
5. Toast the hamburger buns under a broiler or in a toaster until golden brown. This adds a delightful crunch to your sloppy joes!
6. Spoon the creamy chicken mixture over the toasted buns, garnishing with fresh parsley for a pop of color and flavor.

Cooking tip: If the sauce becomes too thick, simply add a splash more chicken broth to reach the desired consistency. Remember, cooking is all about following your senses, just like my abuela taught me.