01 -
Preheat the Blackstone grill over medium-high heat, approximately 400 degrees F.
02 -
Add the oil and butter to the middle of the grill. Spread it around to melt evenly.
03 -
Add the peppers and onions to the grill. Toss to coat them in the oil and butter. Sauté for 3-5 minutes until the peppers reach desired tenderness.
04 -
Move the peppers and onions to a cooler part of the grill or remove and set aside.
05 -
Place hoagie rolls face down on the cooler side of the grill to lightly toast. Monitor closely to avoid burning.
06 -
Add the chicken to the center of the grill. Spread it into a thin layer and season with Italian seasoning, salt, and pepper. Sear for 3-5 minutes until juices start to flow. Flip, chop into smaller pieces using a spatula, and continue cooking for another 2-3 minutes until fully cooked.
07 -
Divide the cooked chicken into four equal piles on the grill. Top each pile with the pepper and onion mixture, then with 2 slices of provolone cheese. Allow the cheese to melt for 1-2 minutes.
08 -
Use a spatula to scoop and place each pile of the mixture onto the toasted hoagie rolls. Serve immediately while warm.