Slice the chicken breast into thin, bite-sized strips for even cooking.
In a small bowl, whisk together the olive oil, lemon juice, oregano, garlic powder, cumin, salt, and pepper.
Toss the chicken strips in the lemon-herb marinade until thoroughly coated.
Heat a non-stick skillet over medium-high heat and sear the chicken for 5-7 minutes until golden brown and crispy.
While the chicken cooks, lightly steam the cauliflower rice in a separate pan until tender.
Dice the cucumber, halve the cherry tomatoes, and finely mince the red onion.
Assemble the bowls by layering the cauliflower rice, fresh vegetables, and crispy chicken.
Drizzle the creamy tahini over the top of the bowl before serving.