Preheat your oven to 350 degrees
Place a large skillet with 4 tablespoons of butter onto the stovetop, but leave it turned off for now
Add 1 1/2 cups of all purpose flour into a shallow dish, season with salt and pepper and set aside
Whisk 3 eggs into a separate shallow dish, season with salt and pepper and set aside
Line a baking sheet with parchment paper and set aside
Cube the tenderloin into equal sized cubes of 1 to 1 1/2 inches
Place 5 or 6 pieces onto each skewer and place the skewers onto a parchment lined baking sheet
Season the skewers with the seasoning mixture
Dip the skewers into the flour, the whisked and seasoned eggs and then the flour once more
Return the coated skewers onto the parchment lined baking sheet
Season the coating lightly with the remaining seasoning mixture (you may have some left over)
Place the skillet with butter over medium/medium high heat and allow the pan to preheat and the butter to melt
Once the butter is sizzling, brown each skewer for 2-3 minutes per side and place the browned skewers into a deep baking dish
Cover the baking dish tightly with aluminum foil
Bake in a preheated 350 degree oven for 20-25 minutes or until the internal temperature reaches 160 degrees
To make the pan gravy, while the skewers are baking, add 1 1/2 cups of chicken stock to the pan that you browned the skewers in and whisk to work up any brown bits from the pan
Return the heat to medium and bring the gravy to a simmer
Combine the remaining 1/2 cup of chicken stock with 1 tablespoon of flour and whisk until smooth
Once the gravy is simmering, add the stock and flour mixture and whisk until fully incorporated
Allow the gravy to simmer, lowering the heat if it begins boil rapidly, until it thickens
If you want to thin the gravy, add some of the drippings from the baking dish once you remove the city chicken from the oven and whisk to combine
Place the cooked city chicken onto plates and top with some pan gravy
Garnish with finely chopped parsley