Heat a drizzle of olive oil in a skillet over medium-high heat and add bacon, cook until crisp then drain on paper towels.
In a salad bowl, whisk together the garlic, mustard, vinegar and stream in extra-virgin olive oil to incorporate the dressing, season with salt and pepper and stir in chives. Shred lettuces and add to the bowl. Halve the cherry tomatoes and add to the bowl along with bacon. Toss salad to coat evenly with dressing and serve.