Easy Sheet Pan Nachos

Ingredients

• 16 ounces tortilla chips
• 1/2 cup cooked and seasoned ground beef or turkey
• 1/2 cup canned black beans
• 1/2 cup canned diced tomatoes
• 1/2 cup black olives
• 1/2 cup pickled jalapeño slices
• 1/4 cup red onion
• 3/4 cup medium cheddar cheese
• 3/4 cup Monterey Jack cheese
• 1/4 cup sour cream
• 1/4 cup fresh cilantro
• 2 tablespoons unsalted butter
• 2 tablespoons all-purpose flour
• 1 1/4 cups whole milk
• 1 1/2 cups sharp cheddar cheese
• 1/2 teaspoon garlic powder
• 1/4 teaspoon onion powder
• salt and black pepper