Start by patting the chicken dry and cutting it into thin strips for faster cooking. Toss the chicken with salt, pepper, and garlic powder, ensuring every piece is evenly coated. This step lays the foundation for mouthwatering flavor.

Heat olive oil in a large skillet over medium-high heat. Add the seasoned chicken strips and cook, stirring occasionally, until golden brown and fully cooked through (about 7–8 minutes). Once done, remove the chicken from the skillet and set it aside. Keep it warm for later.

With the skillet still warm, melt the butter and toss in the sliced onions, mushrooms, and bell peppers. Cook for 5–6 minutes, stirring often, until they start to soften and the onions turn translucent. Add salt, pepper, and minced garlic, cooking for another 2 minutes until fragrant.

Return the cooked chicken to the skillet, mixing it well with the softened vegetables. The flavors come together beautifully at this stage, and your kitchen will smell divine!

Lay slices of provolone cheese over the chicken and veggie mixture in the skillet. Cover with a lid and allow the cheese to melt completely, which usually takes about 1–2 minutes. The gooey, melted cheese is the perfect topping.

Slice your hoagie rolls and scoop generous portions of the cheesy chicken mixture into each. Serve immediately and watch everyone’s face light up with joy.