Place chicken in a 9×13 pan. Season chicken generously on all sides. drizzle melted butter over the top of the chicken.
Bake, uncovered, 25-30 min, or until the chicken is no longer pink or fleshy inside, turning 1/2 way through baking time. If skin is not crispy enough, turn the oven up to broil for the last 2 minutes of cooking, but watch it closely so that it does not burn!
Remove from oven and place chicken on a plate. Cover with foil.
To make gravy, place pan directly onto stovetop burner and turn burner to high. Add one cup of water to the pan. Using a spatula, scrape any dried drippings so they come loose. Add flour to a glass measuring cup or bowl. Slowly add water so the mixture remains smooth. (For thicker gravy, use more flour. For thinner gravy, use less flour or more water.) Add to pan and stir with a wire whisk (spring coil whisk is best). Heat to boiling, then turn down heat. Simmer a few minutes or until thickened. Salt and pepper to taste.