In a mixing bowl, combine lime juice, olive oil, chopped chili, and salt.

Mix well to create the dressing and set aside.

Preheat a griddle pan to medium heat.

Coat each tuna steak with cooking spray.

Place tuna steaks on the preheated griddle pan.

Grill the tuna for approximately one minute on each side.

Continue to turn the fish every minute or so until it starts to lose its raw pink color.

Grill until the tuna is cooked to your desired level of doneness.

Remove the tuna steaks from the griddle and place them on serving plates.

Pour the chilli and lime dressing over the tuna steaks.

Serve immediately with rice, potatoes, bread, or a large mixed salad.