2 large boneless, skinless chicken breasts (1 to 1.5 pounds total)

2 tablespoons olive oil

1 teaspoon garlic powder

1 teaspoon dried Italian seasoning

1/2 teaspoon salt

1/4 teaspoon black pepper

1/2 teaspoon paprika

**For the Walnut Pesto:**

2 cups fresh basil leaves, packed

1/2 cup walnuts, toasted

3 cloves garlic, peeled

1/2 cup grated Parmesan cheese

1/2 cup extra virgin olive oil

2 tablespoons fresh lemon juice

1/4 teaspoon salt

1/4 teaspoon black pepper

**For Assembly:**

4 ciabatta rolls or artisan sandwich bread, sliced

1 cup fresh arugula or mixed greens

1 large tomato, sliced

1/2 red onion, thinly sliced

4 slices provolone or mozzarella cheese (optional)

2 tablespoons butter for toasting bread`),