In a small bowl, combine crumbled blue cheese and Ranch-style dressing; set aside. Season cubed chicken with salt and pepper.
Heat a large skillet over high heat, and pour in the vegetable oil. Just before the oil starts to smoke, add the chicken. Cook to brown evenly, about 3 minutes. Reduce heat to low, and add butter, hot sauce, and salad seasoning mix. Simmer until chicken is cooked through, about 5 minutes.
Toss together the lettuce and Ranch-style dressing mixture in a large bowl. Top salad with chicken, and serve.
