Chop the tomatoes into approx 1-inch pieces. Place in a bowl with a few tablespoons of sherry vinegar, a splash of olive oil, ½ a smashed garlic clove (remove it later), and a few pinches of salt & pepper. Let the tomatoes marinate at room temp (stirring occasionally), while you prep everything else. Taste and adjust seasonings as it sits.
Cook the orzo in salted boiling water for 7-9 minutes or until al dente. While you're waiting for it, take a large bowl and rub the inside of it with the cut side of the other half of your garlic clove.
Drain your orzo and place it (warm) into the bowl. Add a good glug of olive oil, then the arugula, chickpeas, lemon juice, salt & pepper, and toss. Taste and adjust seasonings.
Dice your avocado and season it with a squeeze of lemon and a bit of salt.
Place the orzo salad onto a serving plate (or just keep it in the same bowl).
Take the tomatoes and drain out most of the liquid at the bottom of their bowl (this will keep your salad from becoming too watery). Find that smashed garlic clove and remove it. Place the tomatoes onto the salad with the diced avocado, basil and pine nuts. Taste and adjust seasonings one last time.
gluten free: sub out orzo for quinoa (adjust cooking method accordingly).
Recipe by Love and Lemons at https://www.loveandlemons.com/heirloom-tomato-avocado-chickpea-salad/