01 - Pat chicken breasts dry with paper towels. Season both sides generously with salt, pepper, paprika, and cumin, pressing the spices into the meat to adhere.
02 - Heat olive oil in a large skillet over medium-high heat until shimmering. Add chicken breasts and cook for 5 to 6 minutes per side until golden brown and cooked through to an internal temperature of 165°F. Transfer to a plate and tent with foil.
03 - Reduce heat to medium. Add chopped onion to the skillet and sauté for 2 minutes until translucent. Add minced garlic and sliced jalapeños, cooking for another 2 minutes until fragrant and softened.
04 - Pour chicken broth into the skillet, scraping up any browned bits from the bottom with a wooden spoon. Let simmer for 1 minute to concentrate flavors.
05 - Reduce heat to medium-low. Stir in heavy cream and shredded Monterey Jack cheese, whisking continuously until cheese melts completely and sauce becomes smooth and velvety. Simmer gently for 2 to 3 minutes until slightly thickened.
06 - Return chicken breasts to the skillet, nestling them into the sauce. Spoon sauce generously over each piece. Simmer for 5 minutes to allow flavors to meld. Garnish with fresh chopped cilantro and serve hot.