Slow Cooker Mississippi Pot Roast

Name: Slow Cooker Mississippi Pot Roast
Ingredients: 1 (3 pound) beef roast (such as chuck); 8 pepperoncini peppers (whole or sliced); 2 tablespoons pepperoncini pickling juice (optional); 1/4 cup butter; 1/4 cup all purpose flour (gluten-free for gluten-free); 2 cups beef broth; 1 teaspoon worcestershire sauce (optional); 1 teaspoon soy sauce (optional); salt and pepper to taste; 1 teaspoon dried parsley; 1 teaspoon dried dill; 1 teaspoon dried chives; 1 teaspoon dried onions flakes; 1/2 teaspoon onion powder; 1/2 teaspoon garlic powder; 1/4 teaspoon salt; 1/4 teaspoon pepper