Combine the poppy seeds, white sesame seeds, black sesame seeds, garlic, onion and 1 tablespoon salt in a small bowl. Mix together and add 2 tablespoons of the mix to a food processor. Set the remaining mix aside in an airtight container for later use. Add the cream cheese and pepper relish to the food processor and pulse until completely combined. Transfer the mixture to a serving bowl and top with a little of the remaining spice mix and more pepper relish. Serve with bagel chips.
This dip can be made a few days ahead of time and kept in the refrigerator until ready to serve.