Place bread crumbs, garlic powder and spices in a container. Roll chicken lightly in mixture.
Put vegetable oil in bottom of frying pan, just to cover. Fry chicken about 10 minutes each side, being careful not to overcook.
Line a 8x10 pan with sliced croissants. Line with a chicken tender between sliced croissants. Put about 1 teaspoon Dijon mustard over the chicken, then some cheese and about 1⁄2 teaspoon chopped olives.
Place in oven for about 10-15 minutes to melt cheese.