Begin by seasoning your chicken with garlic powder, paprika, and salt. Sauté the chicken pieces in olive oil for 5-7 minutes until cooked through and golden.

In a separate pan, heat olive oil and add sliced onions. Stir for 10-15 minutes until caramelized.

Return to the chicken skillet, lower heat, and add cheese slices over the chicken. Melt cheese for 3-4 minutes until gooey.

Preheat oven to 350°F (175°C). Cut hoagie rolls in half and toast in the oven for about 5 minutes until golden.

Layer the cheesy chicken into hoagie rolls, top with caramelized onions, and optional ingredients, then close the sandwich.

Serve immediately while hot with a side of fries or salad.