Pre-heat oven to 375F to warm tortillas. Place tortillas in foil to warm them all at once.
Make the buffalo sauce by melting butter on medium heat then adding the hot sauce, vinegar, Worcestershire sauce, chili powder, garlic powder, and onion powder. Stir. Increase heat to high and remove from heat just before it comes to a boil.
Add olive oil to a skillet on medium heat. Add the ground chicken breast and cook for about 10 minutes or until cooked through, stirring often.
Once the chicken is cooked, pour the buffalo sauce over the chicken and give it a quick stir so chicken is evenly coated with the sauce. Assemble tacos immediately. Top tacos with sour cream, avocado, spring onions, lettuce, and a squeeze of lime.