Marinate swordfish in olive oil, lemon juice, garlic, red pepper, salt & pepper for 45 minutes to 1 hour.
While the fish is marinating, soak wooden skewers in warm water to prevent burning or splintering.
Skewer the swordfish, peppers, onions and tomatoes- alternating each item.
Grill or broil the skewers until edges of the fish and veggies begin to char and fish is cooked through (145F).
To serve, top with fresh basil and fresh lemon juice.