Slice the chicken breast into thin, even strips and season thoroughly with sea salt, black pepper, and garlic powder.
Heat the olive oil in a large skillet or cast-iron pan over medium-high heat until shimmering.
Add the chicken strips to the pan in a single layer and sear for 4-5 minutes, turning once, until golden brown and cooked through.
Add the sliced bell peppers and zucchini to the skillet, sautéing for 5-6 minutes until the vegetables are tender-crisp with light charred edges.
In a small bowl, whisk together the chili paste, tamari, and honey to create the spicy glaze.
Reduce the heat to medium, pour the sauce over the chicken and vegetables, and toss constantly for 1 minute until everything is evenly coated and the sauce is glossy.
Remove from heat and serve immediately.