Cover chuck roast with taco seasoning then place in slow cooker. Pour beef consommé over roast and cook on low 6 hours to braise.
Heat oven to 425 F.
Use fork to shred roast.
Brush outside of tortillas with avocado oil and fill with meat and shredded cheese. Place in casserole dish and bake 10-15 minutes until tacos reach desired crispiness.
Place on tray and serve with salsa, guacamole and queso.