Possible Clues:

• Party bowlful with tortilla chips
• Creamy party bowlful
• Nacho accompaniment ... or a feature of 17-, 35- and 52-Across?
• It's served with chips
• Tortilla chip go-with
• Possible 6 Across topper
• Conventional party dish
• It may be served with chips
• Spicy serving in a bowl