Warm tortillas in oven for about 5 minutes.
Heat meat mix in a small saucepan until warmed through.
Heat 1/2 inch deep oil to 400°F (205°C) in a large skillet.
Spread about 1/2 cup meat mix over lower third of each tortilla.
Fold the bottom edges of each tortilla over the filling.
Fold both sides toward the center and roll into a cylinder.
Secure rolled tortillas with a toothpick if needed.
Fry 2 chimichangas at a time in hot oil for about 2 minutes until golden and crisp.
Drain on paper towels.
Serve hot over a layer of shredded lettuce.
Top with green chili salsa, tomatoes, guacamole, and sour cream.
Garnish with an olive.