Preheat oven to 425°F.

Heat oil in a saucepan over medium‑heat and cook beef for 5 to 7 minutes until no longer pink.

Drain fat.

To pan add onion, garlic, chili powder, salt and pepper.

Cook, for 5 minutes, stirring until onion is softened.

Let cool.

On a lightly floured surface, roll dough to 12‑inch round.

Place on 12‑inch pizza pan.

Spread with salsa.

Top with meat mixture and cheese.

Bake for 20 to 25 minutes until crust is golden and cheese is bubbly.

Immediately top with lettuce, tomatoes, olives and green onions.

Sprinkle crushed chips over‑top.

Dollop with sour cream, if desired.