In a small bowl, combine flour, garlic powder, salt and pepper. Dredge chicken breasts in mixture. Set aside.
In another small bowl, beat egg, mustard, lemon juice and lemon and herb spice together. Set aside. Place crushed chips in a large bowl. Dip chicken first in egg mixture, then in crushed Terra chips. Place chicken breasts in roasting pan.
In a small saucepan, melt margarine. Drizzle on top of chicken. Place roasting pan, uncovered, in oven. Bake for 30 to 45 minutes.
Tips: To crush chips and still maintain texture, put them into a seal-able plastic bag and use a rolling pin for crushing. For a finer texture, crush chips in a food processor.