Preheat oven to 375 degrees F. Line a baking sheet with foil and set aside.
Unroll crescent rolls and separate into 6 triangles. Place on prepared baking sheet, prick holes in the dough and spray tops with cooking spray. Place in oven and bake for 5 minutes.
Top each roll with 1 tablespoon of chili, onions, olives and Cheddar. Place back in oven and bake for another 7 minutes, or until edges are golden and cheese is melted.