Prep the chicken. Slice chicken breasts thinly against the grain.
Pat dry, then season with salt, pepper, smoked paprika, garlic powder, onion powder, and Italian seasoning.
Sauté the veggies. Heat 1 tablespoon oil and the butter in a large skillet over medium-high. Add onions and peppers with a pinch of salt. Cook 6–8 minutes, stirring occasionally, until softened and slightly browned.
Remove to a plate.
Cook the chicken. Add remaining oil to the same skillet. Add chicken in an even layer. Sear 3–4 minutes per side until cooked through and lightly browned.
Don’t overcrowd; cook in batches if needed.
Add garlic and combine. Stir in minced garlic and cook 30 seconds. Return peppers and onions to the pan. Toss everything together and adjust salt and pepper.
Make it creamy. Reduce heat to medium-low.
Dot cream cheese over the mixture and gently fold until melted and evenly coated. If it’s too thick, splash in 1–2 tablespoons water or broth.
Finish with cheese. Lay provolone slices over the top. Cover the skillet for 2–3 minutes until the cheese melts and turns silky.
For browned bubbly cheese, pop the skillet under the broiler for 1–2 minutes (oven-safe handle only).
Garnish and serve. Sprinkle parsley or scallions. Serve hot as-is, or with keto sides like cauliflower rice or zucchini noodles.