Coat the roast generously on all sides with oil. Sprinkle with salt and pepper on both sides.
1-2 tablespoon olive oil, 3-4 lb chuck roast, 1 teaspoon kosher salt, ½ teaspoon pepper
Heat a large skillet over high heat. Once hot, sear each side of the roast for 2-3 minutes until a golden brown crust is formed. Remove and place in a 6qt slow cooker.
Pour 1 cup of water in the skillet and simmer for about 30 seconds, scraping up the brown bits. Pour over the roast in the slow cooker.
1 cup water
Add all the remaining roast ingredients to the slow cooker and use tongs or a spatula to gently mix everything together. Cook on low for 8-10 hours or high for 4-4.5 hours, or until it falls apart easily when prodded with tongs or forks.
7 oz can diced roasted green chilis, 1 ¼ cup jarred salsa, 1 tablespoon chili powder, 1 teaspoon cayenne, 1 teaspoon garlic powder, 1 tablespoon cumin
After cooking, use tongs to move the roast onto a cutting board. Use two forks to gently remove any large chunks of fat. Then use the forks to pull the meat apart into bite sized shreds.
Strain the remaining cooking liquids to remove chunky bits, then stir the meat and liquids back together in the slow cooker. Serve with tortillas and toppings.
12-18 corn or flour tortillas, Lettuce, tomato, shredded cheese, salsa, sour cream, avocado