For the grits: Cover the grits in a medium pot with about a quart of hot water. Bring to a boil, whisking often, then cook over medium-high heat until tender, 35 to 45 minutes. Season with salt and pepper. Stir in the honey. When volcanic bubbles appear, turn off the heat. Add the butter and melt, continuing to whisk often. Taste and adjust seasoning with more salt, pepper and/or honey.
For the salsa: Cover the mustard seeds in a small pan with about 1 cup hot water and bring to a boil. Meanwhile, mix the olive oil, vinegar, anchovy oil, hot sauce and Fresno chile in a medium bowl. When very little liquid remains in the pan, add the mustard seeds to the bowl with the oils and vinegar. Add the green apple and parsley. Mix and set aside.
For the shrimp: Sprinkle the shrimp with salt. Lightly coat a large skillet with canola oil and cook the shrimp over medium-high heat. Add the butter to help with the browning. Flip the shrimp after about a minute. Add the lemon zest.
Divide the grits between 2 bowls and top each with 3 pieces of shrimp. Drizzle the shrimp with the salsa.