Slow-Cooker Chuck Roast Tacos

Ingredients

• 1 boneless beef chuck roast (4 pounds)
• 1 teaspoon salt
• 1 teaspoon pepper
• 1 tablespoon olive oil
• 1 bottle (12 ounces) beer or 1 cup beef broth
• 1 can (28 ounces) pickled jalapeno peppers, undrained
• 1 large onion, chopped
• 1 teaspoon garlic powder
• 1 teaspoon chili powder
• Optional: Corn tortillas (6 inches), crumbled Cotija cheese, lime wedges, fresh cilantro leaves, sliced radishes and sour cream