On medium heat, add a tablespoon of butter to a large frying pan. When butter is sizzling, add in diced ham. Sauté on medium to high heat until ham caramelizes and turns dark pink. Turn off heat and set ham aside. Layer tortilla chips on your sheet pan. Warm queso in a saucepan and pour over the tortilla chips. Layer on the green onions, pickled red onions and ham. Top with cilantro, jalapeños, and sour cream.