Before any heat gets involved, I open the pineapple can and drain it into a small bowl, reserving every drop of that juice. Set the pineapple slices on a paper towel to drain further. Pat your chicken thighs completely dry with paper towels—this is non-negotiable for golden-brown skin. Moisture prevents browning. Season both sides of each thigh generously with salt and pepper. I use the back of my hand to rub the seasonings in, making sure they stick to the meat rather than just sitting on the surface. This takes about 90 seconds and makes a real difference in the final flavor.

Place a large oven-safe skillet (10 to 12 inches) over medium heat. Add your cooking oil and let it heat for about 60-90 seconds. You'll know it's ready when the oil shimmers across the surface and moves easily when you tilt the pan. If you see wisps of smoke, your heat is too high—back it down slightly to medium. Carefully place each seasoned chicken thigh skin-side down into the hot oil. You should hear an immediate sizzle—that's the sound of the Maillard reaction, which creates those deeply flavorful, golden-brown layers. Don't move the chicken. Let it sit undisturbed for 5-6 minutes until the skin releases naturally from the pan and turns a rich golden color. Flip each thigh and cook the other side for another 4-5 minutes until golden brown. The internal temperature should reach 165°F when measured with a meat thermometer in the thickest part (not touching bone). Remove all chicken to a clean plate and set aside.

Reduce your stovetop heat to low. The pan is still hot and will retain plenty of heat—this is where the magic happens. Pour about ½ cup of your reserved pineapple juice directly into the hot skillet. You'll hear a gentle sizzle and see steam rise. Use a wooden spoon to scrape the bottom of the pan, working at those browned, caramelized bits. These are pure flavor, and the juice helps dissolve and incorporate them into your sauce. After scraping for about 30-45 seconds, add your ½ cup BBQ sauce and stir constantly until everything combines into a thick, glossy mixture. The consistency should coat the back of a spoon but still flow slightly. If it becomes too thick, add another splash of reserved pineapple juice (about 2 tablespoons). Taste it and add a pinch more salt if needed—remember that the pineapple juice adds natural sweetness and slight acidity.

Return your cooked chicken thighs to the skillet, nestling them skin-side up into the sauce. Arrange the drained pineapple slices around and between the chicken pieces. Using your wooden spoon, gently coat every surface—both the chicken and pineapple—with the glaze, spooning extra sauce over the top. This is purely for appearance and flavor distribution, so take your time here. The goal is for everything to be evenly glossed with that beautiful reddish-brown sauce.

Position your oven rack so your skillet will sit approximately 6 inches below the broiler element. Turn your broiler to high. Transfer your skillet carefully to the oven (use an oven mitt—the handle is hot). Broil for 4-5 minutes, watching through the oven window. You're looking for the edges of the sauce to darken and slightly char, and the pineapple to develop caramelized spots. The whole thing happens quickly—don't walk away. If your skillet isn't oven-safe (some nonstick skillets aren't), simply transfer the chicken, pineapple, and all the sauce to a baking dish and broil in the same manner. Remove from the oven carefully. The skillet handle will be extremely hot. Let it rest for 30 seconds before handling.

Sprinkle the sliced jalapeño pepper (if using) and green onions over the top of the chicken and pineapple. The fresh, bright flavors of these garnishes cut through the richness of the sauce beautifully. Serve immediately while everything is still hot and the sauce is glossy.