Preheat oven to 375°F.
Pat chicken dry. Season both sides with garlic powder, onion powder, paprika, salt, and pepper.
To an oven-safe skillet over medium-high heat, add olive oil. Once hot and shimmering, sear chicken 2 to 3 minutes per side until lightly golden. It will not be fully cooked yet, and that is okay. (It will finish cooking in the oven.) Remove chicken to a plate and set aside.
Reduce heat to medium. To the same skillet, add raspberry preserves, fresh raspberries, diced jalapeño, apple cider vinegar, and water. Cook 2 to 3 minutes, gently mashing some raspberries and scraping up browned bits. The sauce should be slightly thick and glossy.
Place the seared chicken back in the skillet. Spoon a small amount of glaze around the chicken, leaving most of the sauce in the pan.
In a small bowl, mix cream cheese and mayonnaise until smooth. Spread evenly over the top of each chicken breast.
Transfer skillet to the oven and bake 15 minutes.
Remove the skillet from the oven. Spoon the raspberry glaze over the cream cheese layer and check the chicken’s internal temperature. Chicken is fully cooked at 165°F. If it hasn’t reached 165°F, return it to the oven and bake an additional 5 to 7 minutes, or until fully cooked.
Let the chicken rest for 5 minutes. Spoon any extra glaze from the pan over the top, then garnish with fresh parsley and jalapeño slices for a pop of color and flavor, if desired.