Make the dressing: In a small jar, combine olive oil, lemon juice, Dijon, garlic, honey, salt, and pepper.
Seal and shake until creamy. Taste and adjust salt or lemon.
Prep the greens and veggies: Rinse and dry greens well. Halve tomatoes, chop cucumber, and thinly slice red onion.
Chop herbs.
Cook or prep the chicken: If using leftover or rotisserie chicken, shred or chop it. If cooking fresh, season lightly with salt and pepper, sear in a skillet, and let it rest before slicing.
Toast the nuts or seeds: Warm a dry skillet over medium heat. Toast nuts or seeds 2–3 minutes until fragrant.
Let cool.
Dice the avocados: Cut avocados just before assembling. Gently toss with a tiny splash of lemon to prevent browning.
Assemble the base: In a large bowl, add greens, tomatoes, cucumber, red onion, and herbs. If using quinoa, add it now.
Dress the greens: Drizzle in about half the dressing and toss until lightly coated.
You want sheen, not soggy leaves.
Add protein and avocado: Top with chicken and avocado. Drizzle a little more dressing over the top.
Finish with crunch: Sprinkle toasted nuts or seeds. Add crumbled feta if using.
Serve right away: Plate the salad and season with a pinch of salt and pepper.
Add extra lemon if you like it brighter.