Slice the tomatoes in half. Toss on a foil lined sheet pan with olive oil, salt, and pepper. Roast at 425 for 10 minutes.
Combine the ricotta, pesto, half & half, and Romano cheese. Set aside.
Heat the grill . Place the nan bread on the grill to toast one side (2 – 3 minutes). remove from the grill.
Spread the toasted side of the bread with the ricotta mixture and top each bread with the tomatoes. Divide the Italian blend and feta cheeses evenly between the two breads.
Grill covered for 7 – 10 minutes until the cheese begins to melt and the bread is golden brown.
Remove from grill. Drizzle with a little olive oil and sprinkle with the shredded basil. Serve.