Add olive oil to pan; swirl to coat. Crack eggs into pan; cook 2 minutes. Cover and cook an additional 2 minutes or until whites are set or until desired degree of doneness.
Remove from heat.
Place 1 focaccia slice on each of 4 plates; top each serving with 1/4 cup arugula, 2 bacon slice halves, and 1 tomato slice.
Sprinkle tomatoes evenly with salt and pepper. Top each serving with 1 egg; garnish with additional freshly ground black pepper, if desired.