Preheat oven to 375 degrees.In a large bowl, mix together cream cheese, cheddar cheese, parmesan cheese, mayonnaise and jalapeños. Spread it into the bottom of 9x13" pan.In a small bowl mix together bread crumbs and parmesan cheese. Top the cream cheese mixture with the bread crumb mixture and cook for 15-20 minutes, until the top starts to brown.Serve warm with chips, pretzels, or crackers.