Bring 1 1/3 cups water to a boil over medium-high heat.
Stir in barley, and reduce heat to medium-low.
Cover, and simmer for 10 minutes or until barley is just tender.
Remove from heat and let stand for 5 minutes.
Meanwhile, rub tilapia fillets with 2 tsp. of olive oil, and sprinkle with 1/8 tsp. salt and pepper.
Place fillets on baking sheet, and bake for 10 minutes or until fish is opaque.
While fish bakes, heat remaining olive oil in a large skillet over medium heat.
Cook onion, garlic, basil, and thyme for about 3-4 minutes.
Stir in tomatoes, and cook for 3 minutes, stirring occasionally, or until tomatoes soften.
Add spinach, and cook for 2 minutes, or until spinach wilts.
Sprinkle with remaining salt.
Remove fish from oven, and let sit 1-2 minutes.
To serve, divide barley, tilapia, and spinach mixture among 4 plates, and drizzle each serving with 1 tsp. Carlson The Very Finest Fish Oil, lemon flavor.