In a mixing bowl, combine the softened cream cheese, shredded cheddar cheese, chopped jalapeños, garlic powder, onion powder, smoked paprika, salt, and pepper. Mix until well blended.
Carefully slice a pocket into each chicken breast, making sure not to cut all the way through.
Stuff each chicken breast with the jalapeño cheese mixture, pressing down gently to ensure it stays inside.
In a shallow dish, place the breadcrumbs and season with a bit of salt and pepper.
Dip each stuffed chicken breast in olive oil, then coat in the breadcrumb mixture, pressing lightly to adhere the crumbs.
Heat a large oven-safe skillet over medium-high heat and add a drizzle of olive oil. Once hot, place the stuffed chicken breasts in the skillet and sear for 3-4 minutes on each side until golden brown.
Transfer the skillet to the preheated oven and bake for an additional 20-25 minutes, or until the chicken is cooked through (internal temperature should reach 165°F or 74°C).
Once done, remove from the oven and let the chicken rest for a few minutes.
Serve hot, garnished with fresh cilantro if desired.