Preheat the griddle to about 375-400 degrees F. For stovetop cooking, heat a large skillet over medium heat.
While the griddle is heating up, add about 1 teaspoon of Worcestershire sauce to each steak as a binder. Then season all sides of the steaks with your all-purpose seasoning or a simple blend of salt and pepper. Set aside while you start the cheese sauce.
Add ½ cup of half and half to a small saucepan over medium heat. Heat until just before boiling.
While the half and half is heating up, add about 2-3 tablespoons of high-heat cooking oil to the griddle surface and spread it around with your spatula. Add the frozen french fries to the oiled surface, tossing them so that the fries are coated in the oil. Then, spread out the fries in an even layer to start cooking on the first side.
When the half and half is warm, add American cheese slices and shredded cheddar. Stir well until the cheese is melted and fully combined with the half and half. Set the cheese sauce to the side.
When the steak fries develop a nice golden color on the first side, flip to the second side. Season the french fries with salt and pepper and continue to cook, tossing periodically, until crispy and done to your liking. *If needed, you can add more oil to the griddle surface for more of a "shallow fry". When french fries have about 5 minutes left of cooking time, move them to the side of the griddle to continue to cook and make room for the steak.
Adjust one burner of the griddle up to about 425-450℉. Place the steak on the hot griddle surface and cook on the first side until about halfway cooked through (approximately 3-4 minutes depending on your steak thickness and griddle temp). Then flip to the second side and continue to cook until almost done to your liking. Transfer the steak to a cutting board to rest for about 5 minutes. *NOTE - Don't cook the steak all the way through, because it will continue to cook later with the sautéed vegetables and melted cheese.
When fries are done cooking, transfer to a large serving platter or individual plates.
Add the diced peppers and onions to the griddle. Season the vegetables with salt and pepper, and sauté for about 3-4 minutes or until tender.
While peppers and onions are cooking, thinly slice the rested steak against the grain. *It's okay if it is a little under-cooked at this point, because you'll be putting the steak slices back on the griddle.
Add the sliced steak back to the griddle. Toss the steak and sautéed peppers and onions together to combine. If needed, place the saucepan of cheese sauce on the griddle to warm it back up, stirring occasionally until creamy and melted.
Add 2-3 slices of provolone cheese on top of the steak and vegetables and allow to melt. *You can cover with a dome to melt the cheese more quickly if you wish.
Transfer the steak, onions, peppers, and melted provolone cheese to the top of the steak fries. Drizzle homemade cheese sauce on top. Top with pickled jalapeno slices, banana peppers, or your favorite loaded french fry toppings and serve.