Prep the chicken: Pat chicken breasts dry. If thick, slice horizontally to create two thinner cutlets.
This helps them cook evenly and quickly.
Season or marinate: In a small bowl, whisk 1 tablespoon olive oil, 1 tablespoon lemon juice, 1/2 teaspoon salt, 1/2 teaspoon black pepper, 1/2 teaspoon garlic powder, and 1/2 teaspoon smoked paprika. Coat the chicken and let sit 15–30 minutes while you prep the salad.
Make the dressing: Whisk 3 tablespoons balsamic vinegar, 1 teaspoon Dijon mustard, 1–2 teaspoons honey, a pinch of salt, and a few grinds of pepper. Slowly stream in 1/3 cup extra-virgin olive oil, whisking until slightly thickened.
Taste and adjust sweetness or acidity.
Toast the pecans (optional but recommended): Warm a dry skillet over medium heat. Add pecans and toast 3–5 minutes, stirring, until fragrant and a shade darker. Remove to a plate to cool.
Prep the produce: Rinse and dry greens.
Slice strawberries and red onion. If using avocado, slice just before serving to prevent browning. Chop a few leaves of mint or basil if you like a fresh herbal note.
Grill the chicken: Heat a grill or grill pan to medium-high and oil the grates.
Grill chicken 3–5 minutes per side, depending on thickness, until juices run clear and the internal temperature reaches 165°F (74°C). Rest 5 minutes, then slice across the grain.
Assemble the salad base: In a large bowl, add greens, half the strawberries, half the pecans, and a few tablespoons of dressing. Toss gently to coat without bruising the greens.
Top it off: Arrange sliced chicken on top.
Add remaining strawberries and pecans, crumbled feta, red onion, and avocado. Drizzle with more dressing to taste.
Finish and serve: Sprinkle with chopped mint or basil if using. Add a pinch of salt and pepper for final seasoning.
Serve immediately while the chicken is slightly warm for the best contrast.